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Finding the Fourth Proportional to 578,810.18, 866,815.47 and 500,428.10

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Solution

The fourth proportional to 578,810.18, 866,815.47 and 500,428.10 is: 749,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,810.18 : 866,815.47 = 500,428.10 : x
  2. Step 2: Convert to fraction form
    578,810.18/866,815.47 = 500,428.10/x
  3. Step 3: Cross multiply
    578,810.18x = 866,815.47 × 500,428.10
  4. Step 4: Simplify right side
    578,810.18x = 433,778,818,702.71
  5. Step 5: Solve for x
    x = 433,778,818,702.71/578,810.18
  6. Step 6: Final answer
    x = 749,431.91

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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.