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Finding the Fourth Proportional to 680,280.18, 938,763.10 and 374,327.93

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Solution

The fourth proportional to 680,280.18, 938,763.10 and 374,327.93 is: 516,559.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,280.18 : 938,763.10 = 374,327.93 : x
  2. Step 2: Convert to fraction form
    680,280.18/938,763.10 = 374,327.93/x
  3. Step 3: Cross multiply
    680,280.18x = 938,763.10 × 374,327.93
  4. Step 4: Simplify right side
    680,280.18x = 351,405,250,798.20
  5. Step 5: Solve for x
    x = 351,405,250,798.20/680,280.18
  6. Step 6: Final answer
    x = 516,559.59

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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.