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Finding the Fourth Proportional to 658,011.40, 908,058.63 and 356,205.40

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Solution

The fourth proportional to 658,011.40, 908,058.63 and 356,205.40 is: 491,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,011.40 : 908,058.63 = 356,205.40 : x
  2. Step 2: Convert to fraction form
    658,011.40/908,058.63 = 356,205.40/x
  3. Step 3: Cross multiply
    658,011.40x = 908,058.63 × 356,205.40
  4. Step 4: Simplify right side
    658,011.40x = 323,455,387,522.60
  5. Step 5: Solve for x
    x = 323,455,387,522.60/658,011.40
  6. Step 6: Final answer
    x = 491,565.02

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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.