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Finding the Fourth Proportional to 658,431.55, 908,709.29 and 371,970.10

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Solution

The fourth proportional to 658,431.55, 908,709.29 and 371,970.10 is: 513,360.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,431.55 : 908,709.29 = 371,970.10 : x
  2. Step 2: Convert to fraction form
    658,431.55/908,709.29 = 371,970.10/x
  3. Step 3: Cross multiply
    658,431.55x = 908,709.29 × 371,970.10
  4. Step 4: Simplify right side
    658,431.55x = 338,012,685,472.23
  5. Step 5: Solve for x
    x = 338,012,685,472.23/658,431.55
  6. Step 6: Final answer
    x = 513,360.40

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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.