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Finding the Fourth Proportional to 612,767.80, 918,167.55 and 577,338.40

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Solution

The fourth proportional to 612,767.80, 918,167.55 and 577,338.40 is: 865,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,767.80 : 918,167.55 = 577,338.40 : x
  2. Step 2: Convert to fraction form
    612,767.80/918,167.55 = 577,338.40/x
  3. Step 3: Cross multiply
    612,767.80x = 918,167.55 × 577,338.40
  4. Step 4: Simplify right side
    612,767.80x = 530,093,384,248.92
  5. Step 5: Solve for x
    x = 530,093,384,248.92/612,767.80
  6. Step 6: Final answer
    x = 865,080.35

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1.5x scale

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.