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Finding the Fourth Proportional to 478,723.60, 718,085.40 and 329,424.40

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Solution

The fourth proportional to 478,723.60, 718,085.40 and 329,424.40 is: 494,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,723.60 : 718,085.40 = 329,424.40 : x
  2. Step 2: Convert to fraction form
    478,723.60/718,085.40 = 329,424.40/x
  3. Step 3: Cross multiply
    478,723.60x = 718,085.40 × 329,424.40
  4. Step 4: Simplify right side
    478,723.60x = 236,554,852,043.76
  5. Step 5: Solve for x
    x = 236,554,852,043.76/478,723.60
  6. Step 6: Final answer
    x = 494,136.60

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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.