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Finding the Fourth Proportional to 716,337.35, 988,547.87 and 394,071.97

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Solution

The fourth proportional to 716,337.35, 988,547.87 and 394,071.97 is: 543,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,337.35 : 988,547.87 = 394,071.97 : x
  2. Step 2: Convert to fraction form
    716,337.35/988,547.87 = 394,071.97/x
  3. Step 3: Cross multiply
    716,337.35x = 988,547.87 × 394,071.97
  4. Step 4: Simplify right side
    716,337.35x = 389,559,001,627.47
  5. Step 5: Solve for x
    x = 389,559,001,627.47/716,337.35
  6. Step 6: Final answer
    x = 543,820.59

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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.