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Finding the Fourth Proportional to 448,077.70, 672,116.55 and 402,976.90

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Solution

The fourth proportional to 448,077.70, 672,116.55 and 402,976.90 is: 604,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,077.70 : 672,116.55 = 402,976.90 : x
  2. Step 2: Convert to fraction form
    448,077.70/672,116.55 = 402,976.90/x
  3. Step 3: Cross multiply
    448,077.70x = 672,116.55 × 402,976.90
  4. Step 4: Simplify right side
    448,077.70x = 270,847,443,757.70
  5. Step 5: Solve for x
    x = 270,847,443,757.70/448,077.70
  6. Step 6: Final answer
    x = 604,465.35

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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.