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Finding the Fourth Proportional to 508,058.90, 762,088.35 and 339,659.90

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Solution

The fourth proportional to 508,058.90, 762,088.35 and 339,659.90 is: 509,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,058.90 : 762,088.35 = 339,659.90 : x
  2. Step 2: Convert to fraction form
    508,058.90/762,088.35 = 339,659.90/x
  3. Step 3: Cross multiply
    508,058.90x = 762,088.35 × 339,659.90
  4. Step 4: Simplify right side
    508,058.90x = 258,850,852,752.17
  5. Step 5: Solve for x
    x = 258,850,852,752.17/508,058.90
  6. Step 6: Final answer
    x = 509,489.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.