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Finding the Fourth Proportional to 612,799.30, 918,214.80 and 577,369.90

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Solution

The fourth proportional to 612,799.30, 918,214.80 and 577,369.90 is: 865,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,799.30 : 918,214.80 = 577,369.90 : x
  2. Step 2: Convert to fraction form
    612,799.30/918,214.80 = 577,369.90/x
  3. Step 3: Cross multiply
    612,799.30x = 918,214.80 × 577,369.90
  4. Step 4: Simplify right side
    612,799.30x = 530,149,587,254.52
  5. Step 5: Solve for x
    x = 530,149,587,254.52/612,799.30
  6. Step 6: Final answer
    x = 865,127.60

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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.