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Finding the Fourth Proportional to 598,959.40, 898,439.10 and 319,023.40

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Solution

The fourth proportional to 598,959.40, 898,439.10 and 319,023.40 is: 478,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,959.40 : 898,439.10 = 319,023.40 : x
  2. Step 2: Convert to fraction form
    598,959.40/898,439.10 = 319,023.40/x
  3. Step 3: Cross multiply
    598,959.40x = 898,439.10 × 319,023.40
  4. Step 4: Simplify right side
    598,959.40x = 286,623,096,374.94
  5. Step 5: Solve for x
    x = 286,623,096,374.94/598,959.40
  6. Step 6: Final answer
    x = 478,535.10

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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.