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Finding the Fourth Proportional to 665,306.30, 918,123.06 and 359,382.68

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Solution

The fourth proportional to 665,306.30, 918,123.06 and 359,382.68 is: 495,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,306.30 : 918,123.06 = 359,382.68 : x
  2. Step 2: Convert to fraction form
    665,306.30/918,123.06 = 359,382.68/x
  3. Step 3: Cross multiply
    665,306.30x = 918,123.06 × 359,382.68
  4. Step 4: Simplify right side
    665,306.30x = 329,957,525,872.60
  5. Step 5: Solve for x
    x = 329,957,525,872.60/665,306.30
  6. Step 6: Final answer
    x = 495,948.30

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1.5x scale

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.