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Finding the Fourth Proportional to 658,430.59, 908,707.95 and 371,969.12

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Solution

The fourth proportional to 658,430.59, 908,707.95 and 371,969.12 is: 513,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,430.59 : 908,707.95 = 371,969.12 : x
  2. Step 2: Convert to fraction form
    658,430.59/908,707.95 = 371,969.12/x
  3. Step 3: Cross multiply
    658,430.59x = 908,707.95 × 371,969.12
  4. Step 4: Simplify right side
    658,430.59x = 338,011,296,498.50
  5. Step 5: Solve for x
    x = 338,011,296,498.50/658,430.59
  6. Step 6: Final answer
    x = 513,359.05

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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.