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Finding the Fourth Proportional to 612,797.30, 918,211.80 and 577,367.90

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Solution

The fourth proportional to 612,797.30, 918,211.80 and 577,367.90 is: 865,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,797.30 : 918,211.80 = 577,367.90 : x
  2. Step 2: Convert to fraction form
    612,797.30/918,211.80 = 577,367.90/x
  3. Step 3: Cross multiply
    612,797.30x = 918,211.80 × 577,367.90
  4. Step 4: Simplify right side
    612,797.30x = 530,146,018,721.22
  5. Step 5: Solve for x
    x = 530,146,018,721.22/612,797.30
  6. Step 6: Final answer
    x = 865,124.60

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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.