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Finding the Fourth Proportional to 611,570.60, 917,355.90 and 554,489.90

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Solution

The fourth proportional to 611,570.60, 917,355.90 and 554,489.90 is: 831,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,570.60 : 917,355.90 = 554,489.90 : x
  2. Step 2: Convert to fraction form
    611,570.60/917,355.90 = 554,489.90/x
  3. Step 3: Cross multiply
    611,570.60x = 917,355.90 × 554,489.90
  4. Step 4: Simplify right side
    611,570.60x = 508,664,581,255.41
  5. Step 5: Solve for x
    x = 508,664,581,255.41/611,570.60
  6. Step 6: Final answer
    x = 831,734.85

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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.