Home / 912,990.48-1,369,486.28-344,217.12

Finding the Fourth Proportional to 912,990.48, 1,369,486.28 and 344,217.12

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Solution

The fourth proportional to 912,990.48, 1,369,486.28 and 344,217.12 is: 516,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,990.48 : 1,369,486.28 = 344,217.12 : x
  2. Step 2: Convert to fraction form
    912,990.48/1,369,486.28 = 344,217.12/x
  3. Step 3: Cross multiply
    912,990.48x = 1,369,486.28 × 344,217.12
  4. Step 4: Simplify right side
    912,990.48x = 471,400,623,181.11
  5. Step 5: Solve for x
    x = 471,400,623,181.11/912,990.48
  6. Step 6: Final answer
    x = 516,325.89

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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.