Home / 913,415.60-1,370,123.40-282,393.20

Finding the Fourth Proportional to 913,415.60, 1,370,123.40 and 282,393.20

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Solution

The fourth proportional to 913,415.60, 1,370,123.40 and 282,393.20 is: 423,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,415.60 : 1,370,123.40 = 282,393.20 : x
  2. Step 2: Convert to fraction form
    913,415.60/1,370,123.40 = 282,393.20/x
  3. Step 3: Cross multiply
    913,415.60x = 1,370,123.40 × 282,393.20
  4. Step 4: Simplify right side
    913,415.60x = 386,913,531,320.88
  5. Step 5: Solve for x
    x = 386,913,531,320.88/913,415.60
  6. Step 6: Final answer
    x = 423,589.80

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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.