Home / 871,353.60-1,306,723.20-310,406.40

Finding the Fourth Proportional to 871,353.60, 1,306,723.20 and 310,406.40

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Solution

The fourth proportional to 871,353.60, 1,306,723.20 and 310,406.40 is: 465,500.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,353.60 : 1,306,723.20 = 310,406.40 : x
  2. Step 2: Convert to fraction form
    871,353.60/1,306,723.20 = 310,406.40/x
  3. Step 3: Cross multiply
    871,353.60x = 1,306,723.20 × 310,406.40
  4. Step 4: Simplify right side
    871,353.60x = 405,615,244,308.48
  5. Step 5: Solve for x
    x = 405,615,244,308.48/871,353.60
  6. Step 6: Final answer
    x = 465,500.16

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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.