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Finding the Fourth Proportional to 680,289.84, 938,798.10 and 374,372.28

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Solution

The fourth proportional to 680,289.84, 938,798.10 and 374,372.28 is: 516,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,289.84 : 938,798.10 = 374,372.28 : x
  2. Step 2: Convert to fraction form
    680,289.84/938,798.10 = 374,372.28/x
  3. Step 3: Cross multiply
    680,289.84x = 938,798.10 × 374,372.28
  4. Step 4: Simplify right side
    680,289.84x = 351,459,985,156.67
  5. Step 5: Solve for x
    x = 351,459,985,156.67/680,289.84
  6. Step 6: Final answer
    x = 516,632.71

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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.