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Finding the Fourth Proportional to 869,341.91, 1,199,691.02 and 487,368.77

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Solution

The fourth proportional to 869,341.91, 1,199,691.02 and 487,368.77 is: 672,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,341.91 : 1,199,691.02 = 487,368.77 : x
  2. Step 2: Convert to fraction form
    869,341.91/1,199,691.02 = 487,368.77/x
  3. Step 3: Cross multiply
    869,341.91x = 1,199,691.02 × 487,368.77
  4. Step 4: Simplify right side
    869,341.91x = 584,691,932,017.41
  5. Step 5: Solve for x
    x = 584,691,932,017.41/869,341.91
  6. Step 6: Final answer
    x = 672,568.44

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Double scale
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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.