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Finding the Fourth Proportional to 577,443.80, 865,181.55 and 492,806.90

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Solution

The fourth proportional to 577,443.80, 865,181.55 and 492,806.90 is: 738,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,443.80 : 865,181.55 = 492,806.90 : x
  2. Step 2: Convert to fraction form
    577,443.80/865,181.55 = 492,806.90/x
  3. Step 3: Cross multiply
    577,443.80x = 865,181.55 × 492,806.90
  4. Step 4: Simplify right side
    577,443.80x = 426,367,437,592.70
  5. Step 5: Solve for x
    x = 426,367,437,592.70/577,443.80
  6. Step 6: Final answer
    x = 738,370.45

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Double scale
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Similar ratio
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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.