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Finding the Fourth Proportional to 478,049.60, 717,074.40 and 328,750.40

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Solution

The fourth proportional to 478,049.60, 717,074.40 and 328,750.40 is: 493,125.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,049.60 : 717,074.40 = 328,750.40 : x
  2. Step 2: Convert to fraction form
    478,049.60/717,074.40 = 328,750.40/x
  3. Step 3: Cross multiply
    478,049.60x = 717,074.40 × 328,750.40
  4. Step 4: Simplify right side
    478,049.60x = 235,738,495,829.76
  5. Step 5: Solve for x
    x = 235,738,495,829.76/478,049.60
  6. Step 6: Final answer
    x = 493,125.60

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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.