Home / 930,031.20-1,395,046.80-457,639.20

Finding the Fourth Proportional to 930,031.20, 1,395,046.80 and 457,639.20

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Solution

The fourth proportional to 930,031.20, 1,395,046.80 and 457,639.20 is: 686,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,031.20 : 1,395,046.80 = 457,639.20 : x
  2. Step 2: Convert to fraction form
    930,031.20/1,395,046.80 = 457,639.20/x
  3. Step 3: Cross multiply
    930,031.20x = 1,395,046.80 × 457,639.20
  4. Step 4: Simplify right side
    930,031.20x = 638,428,101,514.56
  5. Step 5: Solve for x
    x = 638,428,101,514.56/930,031.20
  6. Step 6: Final answer
    x = 686,458.80

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.