Home / 868,139.40-1,302,209.10-448,235.40

Finding the Fourth Proportional to 868,139.40, 1,302,209.10 and 448,235.40

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Solution

The fourth proportional to 868,139.40, 1,302,209.10 and 448,235.40 is: 672,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,139.40 : 1,302,209.10 = 448,235.40 : x
  2. Step 2: Convert to fraction form
    868,139.40/1,302,209.10 = 448,235.40/x
  3. Step 3: Cross multiply
    868,139.40x = 1,302,209.10 × 448,235.40
  4. Step 4: Simplify right side
    868,139.40x = 583,696,216,822.14
  5. Step 5: Solve for x
    x = 583,696,216,822.14/868,139.40
  6. Step 6: Final answer
    x = 672,353.10

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