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Finding the Fourth Proportional to 656,470.80, 905,479.20 and 401,947.20

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Solution

The fourth proportional to 656,470.80, 905,479.20 and 401,947.20 is: 554,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,470.80 : 905,479.20 = 401,947.20 : x
  2. Step 2: Convert to fraction form
    656,470.80/905,479.20 = 401,947.20/x
  3. Step 3: Cross multiply
    656,470.80x = 905,479.20 × 401,947.20
  4. Step 4: Simplify right side
    656,470.80x = 363,954,829,098.24
  5. Step 5: Solve for x
    x = 363,954,829,098.24/656,470.80
  6. Step 6: Final answer
    x = 554,411.30

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