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Finding the Fourth Proportional to 942,718.38, 1,300,978.74 and 513,026.22

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Solution

The fourth proportional to 942,718.38, 1,300,978.74 and 513,026.22 is: 707,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,718.38 : 1,300,978.74 = 513,026.22 : x
  2. Step 2: Convert to fraction form
    942,718.38/1,300,978.74 = 513,026.22/x
  3. Step 3: Cross multiply
    942,718.38x = 1,300,978.74 × 513,026.22
  4. Step 4: Simplify right side
    942,718.38x = 667,436,205,282.56
  5. Step 5: Solve for x
    x = 667,436,205,282.56/942,718.38
  6. Step 6: Final answer
    x = 707,991.08

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Double scale
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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.