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Finding the Fourth Proportional to 488,602.90, 732,904.35 and 405,658.90

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Solution

The fourth proportional to 488,602.90, 732,904.35 and 405,658.90 is: 608,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,602.90 : 732,904.35 = 405,658.90 : x
  2. Step 2: Convert to fraction form
    488,602.90/732,904.35 = 405,658.90/x
  3. Step 3: Cross multiply
    488,602.90x = 732,904.35 × 405,658.90
  4. Step 4: Simplify right side
    488,602.90x = 297,309,172,426.22
  5. Step 5: Solve for x
    x = 297,309,172,426.22/488,602.90
  6. Step 6: Final answer
    x = 608,488.35

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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.