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Finding the Fourth Proportional to 553,663.20, 763,637.04 and 477,314.40

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Solution

The fourth proportional to 553,663.20, 763,637.04 and 477,314.40 is: 658,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,663.20 : 763,637.04 = 477,314.40 : x
  2. Step 2: Convert to fraction form
    553,663.20/763,637.04 = 477,314.40/x
  3. Step 3: Cross multiply
    553,663.20x = 763,637.04 × 477,314.40
  4. Step 4: Simplify right side
    553,663.20x = 364,494,955,565.38
  5. Step 5: Solve for x
    x = 364,494,955,565.38/553,663.20
  6. Step 6: Final answer
    x = 658,333.36

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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.