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Finding the Fourth Proportional to 691,262, 953,941.60 and 373,310

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Solution

The fourth proportional to 691,262, 953,941.60 and 373,310 is: 515,167.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,262 : 953,941.60 = 373,310 : x
  2. Step 2: Convert to fraction form
    691,262/953,941.60 = 373,310/x
  3. Step 3: Cross multiply
    691,262x = 953,941.60 × 373,310
  4. Step 4: Simplify right side
    691,262x = 356,115,938,696
  5. Step 5: Solve for x
    x = 356,115,938,696/691,262
  6. Step 6: Final answer
    x = 515,167.82

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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.