Home / 849,403.20-1,172,187.12-467,421.60

Finding the Fourth Proportional to 849,403.20, 1,172,187.12 and 467,421.60

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Solution

The fourth proportional to 849,403.20, 1,172,187.12 and 467,421.60 is: 645,047.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,403.20 : 1,172,187.12 = 467,421.60 : x
  2. Step 2: Convert to fraction form
    849,403.20/1,172,187.12 = 467,421.60/x
  3. Step 3: Cross multiply
    849,403.20x = 1,172,187.12 × 467,421.60
  4. Step 4: Simplify right side
    849,403.20x = 547,905,579,129.79
  5. Step 5: Solve for x
    x = 547,905,579,129.79/849,403.20
  6. Step 6: Final answer
    x = 645,047.70

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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.