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Finding the Fourth Proportional to 555,767.80, 766,949.55 and 314,045.17

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Solution

The fourth proportional to 555,767.80, 766,949.55 and 314,045.17 is: 433,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,767.80 : 766,949.55 = 314,045.17 : x
  2. Step 2: Convert to fraction form
    555,767.80/766,949.55 = 314,045.17/x
  3. Step 3: Cross multiply
    555,767.80x = 766,949.55 × 314,045.17
  4. Step 4: Simplify right side
    555,767.80x = 240,856,798,716.13
  5. Step 5: Solve for x
    x = 240,856,798,716.13/555,767.80
  6. Step 6: Final answer
    x = 433,376.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.