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Finding the Fourth Proportional to 488,455.10, 732,682.65 and 289,000.70

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Solution

The fourth proportional to 488,455.10, 732,682.65 and 289,000.70 is: 433,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,455.10 : 732,682.65 = 289,000.70 : x
  2. Step 2: Convert to fraction form
    488,455.10/732,682.65 = 289,000.70/x
  3. Step 3: Cross multiply
    488,455.10x = 732,682.65 × 289,000.70
  4. Step 4: Simplify right side
    488,455.10x = 211,745,798,727.86
  5. Step 5: Solve for x
    x = 211,745,798,727.86/488,455.10
  6. Step 6: Final answer
    x = 433,501.05

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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.