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Finding the Fourth Proportional to 680,014.32, 938,390.10 and 374,071.30

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Solution

The fourth proportional to 680,014.32, 938,390.10 and 374,071.30 is: 516,202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,014.32 : 938,390.10 = 374,071.30 : x
  2. Step 2: Convert to fraction form
    680,014.32/938,390.10 = 374,071.30/x
  3. Step 3: Cross multiply
    680,014.32x = 938,390.10 × 374,071.30
  4. Step 4: Simplify right side
    680,014.32x = 351,024,804,614.13
  5. Step 5: Solve for x
    x = 351,024,804,614.13/680,014.32
  6. Step 6: Final answer
    x = 516,202.08

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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.