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Finding the Fourth Proportional to 612,006.60, 918,009.90 and 554,925.90

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Solution

The fourth proportional to 612,006.60, 918,009.90 and 554,925.90 is: 832,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,006.60 : 918,009.90 = 554,925.90 : x
  2. Step 2: Convert to fraction form
    612,006.60/918,009.90 = 554,925.90/x
  3. Step 3: Cross multiply
    612,006.60x = 918,009.90 × 554,925.90
  4. Step 4: Simplify right side
    612,006.60x = 509,427,469,966.41
  5. Step 5: Solve for x
    x = 509,427,469,966.41/612,006.60
  6. Step 6: Final answer
    x = 832,388.85

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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.