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Finding the Fourth Proportional to 478,686.40, 717,045.45 and 329,095.60

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Solution

The fourth proportional to 478,686.40, 717,045.45 and 329,095.60 is: 492,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,686.40 : 717,045.45 = 329,095.60 : x
  2. Step 2: Convert to fraction form
    478,686.40/717,045.45 = 329,095.60/x
  3. Step 3: Cross multiply
    478,686.40x = 717,045.45 × 329,095.60
  4. Step 4: Simplify right side
    478,686.40x = 235,976,502,595.02
  5. Step 5: Solve for x
    x = 235,976,502,595.02/478,686.40
  6. Step 6: Final answer
    x = 492,966.80

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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.