Home / 924,139.80-1,385,172.90-391,570.20

Finding the Fourth Proportional to 924,139.80, 1,385,172.90 and 391,570.20

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Solution

The fourth proportional to 924,139.80, 1,385,172.90 and 391,570.20 is: 586,915.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,139.80 : 1,385,172.90 = 391,570.20 : x
  2. Step 2: Convert to fraction form
    924,139.80/1,385,172.90 = 391,570.20/x
  3. Step 3: Cross multiply
    924,139.80x = 1,385,172.90 × 391,570.20
  4. Step 4: Simplify right side
    924,139.80x = 542,392,429,487.58
  5. Step 5: Solve for x
    x = 542,392,429,487.58/924,139.80
  6. Step 6: Final answer
    x = 586,915.99

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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.