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Finding the Fourth Proportional to 656,031.12, 980,452.30 and 478,911.12

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Solution

The fourth proportional to 656,031.12, 980,452.30 and 478,911.12 is: 715,742.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,031.12 : 980,452.30 = 478,911.12 : x
  2. Step 2: Convert to fraction form
    656,031.12/980,452.30 = 478,911.12/x
  3. Step 3: Cross multiply
    656,031.12x = 980,452.30 × 478,911.12
  4. Step 4: Simplify right side
    656,031.12x = 469,549,509,099.58
  5. Step 5: Solve for x
    x = 469,549,509,099.58/656,031.12
  6. Step 6: Final answer
    x = 715,742.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.