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Finding the Fourth Proportional to 555,776.76, 766,548.81 and 478,384.13

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Solution

The fourth proportional to 555,776.76, 766,548.81 and 478,384.13 is: 659,805.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,776.76 : 766,548.81 = 478,384.13 : x
  2. Step 2: Convert to fraction form
    555,776.76/766,548.81 = 478,384.13/x
  3. Step 3: Cross multiply
    555,776.76x = 766,548.81 × 478,384.13
  4. Step 4: Simplify right side
    555,776.76x = 366,704,781,741.64
  5. Step 5: Solve for x
    x = 366,704,781,741.64/555,776.76
  6. Step 6: Final answer
    x = 659,805.89

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1.5x scale

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.