Home / 642,023.60-963,035.40-310,247.60

Finding the Fourth Proportional to 642,023.60, 963,035.40 and 310,247.60

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Solution

The fourth proportional to 642,023.60, 963,035.40 and 310,247.60 is: 465,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,023.60 : 963,035.40 = 310,247.60 : x
  2. Step 2: Convert to fraction form
    642,023.60/963,035.40 = 310,247.60/x
  3. Step 3: Cross multiply
    642,023.60x = 963,035.40 × 310,247.60
  4. Step 4: Simplify right side
    642,023.60x = 298,779,421,565.04
  5. Step 5: Solve for x
    x = 298,779,421,565.04/642,023.60
  6. Step 6: Final answer
    x = 465,371.40

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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.