Home / 1,191,547,553.40-1,787,321,330.10-329,904,545.40

Finding the Fourth Proportional to 1,191,547,553.40, 1,787,321,330.10 and 329,904,545.40

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Solution

The fourth proportional to 1,191,547,553.40, 1,787,321,330.10 and 329,904,545.40 is: 494,856,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,547,553.40 : 1,787,321,330.10 = 329,904,545.40 : x
  2. Step 2: Convert to fraction form
    1,191,547,553.40/1,787,321,330.10 = 329,904,545.40/x
  3. Step 3: Cross multiply
    1,191,547,553.40x = 1,787,321,330.10 × 329,904,545.40
  4. Step 4: Simplify right side
    1,191,547,553.40x = 589,645,430,890,363,776
  5. Step 5: Solve for x
    x = 589,645,430,890,363,776/1,191,547,553.40
  6. Step 6: Final answer
    x = 494,856,818.10

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Double scale
Find fourth proportional to 1,191,547,554.40, 1,787,321,331.60 and 329,904,546.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.