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Finding the Fourth Proportional to 598,840.60, 898,385.70 and 199,605.40

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Solution

The fourth proportional to 598,840.60, 898,385.70 and 199,605.40 is: 299,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,840.60 : 898,385.70 = 199,605.40 : x
  2. Step 2: Convert to fraction form
    598,840.60/898,385.70 = 199,605.40/x
  3. Step 3: Cross multiply
    598,840.60x = 898,385.70 × 199,605.40
  4. Step 4: Simplify right side
    598,840.60x = 179,322,637,002.78
  5. Step 5: Solve for x
    x = 179,322,637,002.78/598,840.60
  6. Step 6: Final answer
    x = 299,449.70

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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.