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Finding the Fourth Proportional to 676,403.36, 931,312.14 and 574,217

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Solution

The fourth proportional to 676,403.36, 931,312.14 and 574,217 is: 790,615.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,403.36 : 931,312.14 = 574,217 : x
  2. Step 2: Convert to fraction form
    676,403.36/931,312.14 = 574,217/x
  3. Step 3: Cross multiply
    676,403.36x = 931,312.14 × 574,217
  4. Step 4: Simplify right side
    676,403.36x = 534,775,263,094.38
  5. Step 5: Solve for x
    x = 534,775,263,094.38/676,403.36
  6. Step 6: Final answer
    x = 790,615.92

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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.