Home / 1,331,421.30-1,997,131.95-432,892.35

Finding the Fourth Proportional to 1,331,421.30, 1,997,131.95 and 432,892.35

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Solution

The fourth proportional to 1,331,421.30, 1,997,131.95 and 432,892.35 is: 649,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,421.30 : 1,997,131.95 = 432,892.35 : x
  2. Step 2: Convert to fraction form
    1,331,421.30/1,997,131.95 = 432,892.35/x
  3. Step 3: Cross multiply
    1,331,421.30x = 1,997,131.95 × 432,892.35
  4. Step 4: Simplify right side
    1,331,421.30x = 864,543,143,095.58
  5. Step 5: Solve for x
    x = 864,543,143,095.58/1,331,421.30
  6. Step 6: Final answer
    x = 649,338.53

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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.