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Finding the Fourth Proportional to 680,013.16, 938,388.58 and 374,070.15

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Solution

The fourth proportional to 680,013.16, 938,388.58 and 374,070.15 is: 516,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,013.16 : 938,388.58 = 374,070.15 : x
  2. Step 2: Convert to fraction form
    680,013.16/938,388.58 = 374,070.15/x
  3. Step 3: Cross multiply
    680,013.16x = 938,388.58 × 374,070.15
  4. Step 4: Simplify right side
    680,013.16x = 351,023,157,521.82
  5. Step 5: Solve for x
    x = 351,023,157,521.82/680,013.16
  6. Step 6: Final answer
    x = 516,200.53

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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.