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Finding the Fourth Proportional to 488,029.40, 732,044.10 and 320,607.80

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Solution

The fourth proportional to 488,029.40, 732,044.10 and 320,607.80 is: 480,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,029.40 : 732,044.10 = 320,607.80 : x
  2. Step 2: Convert to fraction form
    488,029.40/732,044.10 = 320,607.80/x
  3. Step 3: Cross multiply
    488,029.40x = 732,044.10 × 320,607.80
  4. Step 4: Simplify right side
    488,029.40x = 234,699,048,403.98
  5. Step 5: Solve for x
    x = 234,699,048,403.98/488,029.40
  6. Step 6: Final answer
    x = 480,911.70

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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.