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Finding the Fourth Proportional to 554,954.80, 832,432.20 and 478,847.20

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Solution

The fourth proportional to 554,954.80, 832,432.20 and 478,847.20 is: 718,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,954.80 : 832,432.20 = 478,847.20 : x
  2. Step 2: Convert to fraction form
    554,954.80/832,432.20 = 478,847.20/x
  3. Step 3: Cross multiply
    554,954.80x = 832,432.20 × 478,847.20
  4. Step 4: Simplify right side
    554,954.80x = 398,607,828,159.84
  5. Step 5: Solve for x
    x = 398,607,828,159.84/554,954.80
  6. Step 6: Final answer
    x = 718,270.80

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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.