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Finding the Fourth Proportional to 612,795.80, 918,209.55 and 577,366.40

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Solution

The fourth proportional to 612,795.80, 918,209.55 and 577,366.40 is: 865,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,795.80 : 918,209.55 = 577,366.40 : x
  2. Step 2: Convert to fraction form
    612,795.80/918,209.55 = 577,366.40/x
  3. Step 3: Cross multiply
    612,795.80x = 918,209.55 × 577,366.40
  4. Step 4: Simplify right side
    612,795.80x = 530,143,342,329.12
  5. Step 5: Solve for x
    x = 530,143,342,329.12/612,795.80
  6. Step 6: Final answer
    x = 865,122.35

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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.