Home / 1,385,635.17-2,078,428.13-438,981.30

Finding the Fourth Proportional to 1,385,635.17, 2,078,428.13 and 438,981.30

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Solution

The fourth proportional to 1,385,635.17, 2,078,428.13 and 438,981.30 is: 658,464.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,635.17 : 2,078,428.13 = 438,981.30 : x
  2. Step 2: Convert to fraction form
    1,385,635.17/2,078,428.13 = 438,981.30/x
  3. Step 3: Cross multiply
    1,385,635.17x = 2,078,428.13 × 438,981.30
  4. Step 4: Simplify right side
    1,385,635.17x = 912,391,080,269.06
  5. Step 5: Solve for x
    x = 912,391,080,269.06/1,385,635.17
  6. Step 6: Final answer
    x = 658,464.15

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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.