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Finding the Fourth Proportional to 660,500.85, 911,770.29 and 445,931.58

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Solution

The fourth proportional to 660,500.85, 911,770.29 and 445,931.58 is: 615,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,500.85 : 911,770.29 = 445,931.58 : x
  2. Step 2: Convert to fraction form
    660,500.85/911,770.29 = 445,931.58/x
  3. Step 3: Cross multiply
    660,500.85x = 911,770.29 × 445,931.58
  4. Step 4: Simplify right side
    660,500.85x = 406,587,166,016.76
  5. Step 5: Solve for x
    x = 406,587,166,016.76/660,500.85
  6. Step 6: Final answer
    x = 615,574.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.