Home / 749,079.80-1,123,619.70-497,137.40

Finding the Fourth Proportional to 749,079.80, 1,123,619.70 and 497,137.40

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Solution

The fourth proportional to 749,079.80, 1,123,619.70 and 497,137.40 is: 745,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,079.80 : 1,123,619.70 = 497,137.40 : x
  2. Step 2: Convert to fraction form
    749,079.80/1,123,619.70 = 497,137.40/x
  3. Step 3: Cross multiply
    749,079.80x = 1,123,619.70 × 497,137.40
  4. Step 4: Simplify right side
    749,079.80x = 558,593,376,246.78
  5. Step 5: Solve for x
    x = 558,593,376,246.78/749,079.80
  6. Step 6: Final answer
    x = 745,706.10

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Double scale
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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.