Home / 2,805,311.20-4,207,966.80-912,114.40

Finding the Fourth Proportional to 2,805,311.20, 4,207,966.80 and 912,114.40

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Solution

The fourth proportional to 2,805,311.20, 4,207,966.80 and 912,114.40 is: 1,368,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805,311.20 : 4,207,966.80 = 912,114.40 : x
  2. Step 2: Convert to fraction form
    2,805,311.20/4,207,966.80 = 912,114.40/x
  3. Step 3: Cross multiply
    2,805,311.20x = 4,207,966.80 × 912,114.40
  4. Step 4: Simplify right side
    2,805,311.20x = 3,838,147,113,001.92
  5. Step 5: Solve for x
    x = 3,838,147,113,001.92/2,805,311.20
  6. Step 6: Final answer
    x = 1,368,171.60

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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.