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Finding the Fourth Proportional to 478,598.40, 717,897.60 and 291,974.40

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Solution

The fourth proportional to 478,598.40, 717,897.60 and 291,974.40 is: 437,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,598.40 : 717,897.60 = 291,974.40 : x
  2. Step 2: Convert to fraction form
    478,598.40/717,897.60 = 291,974.40/x
  3. Step 3: Cross multiply
    478,598.40x = 717,897.60 × 291,974.40
  4. Step 4: Simplify right side
    478,598.40x = 209,607,721,021.44
  5. Step 5: Solve for x
    x = 209,607,721,021.44/478,598.40
  6. Step 6: Final answer
    x = 437,961.60

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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.