Home / 672,531.36-928,148.76-386,106.72

Finding the Fourth Proportional to 672,531.36, 928,148.76 and 386,106.72

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Solution

The fourth proportional to 672,531.36, 928,148.76 and 386,106.72 is: 532,859.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,531.36 : 928,148.76 = 386,106.72 : x
  2. Step 2: Convert to fraction form
    672,531.36/928,148.76 = 386,106.72/x
  3. Step 3: Cross multiply
    672,531.36x = 928,148.76 × 386,106.72
  4. Step 4: Simplify right side
    672,531.36x = 358,364,473,395.67
  5. Step 5: Solve for x
    x = 358,364,473,395.67/672,531.36
  6. Step 6: Final answer
    x = 532,859.13

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Half scale
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Double scale
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Similar ratio
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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.