Home / 458,666.20-687,999.30-121,706.20

Finding the Fourth Proportional to 458,666.20, 687,999.30 and 121,706.20

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Solution

The fourth proportional to 458,666.20, 687,999.30 and 121,706.20 is: 182,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,666.20 : 687,999.30 = 121,706.20 : x
  2. Step 2: Convert to fraction form
    458,666.20/687,999.30 = 121,706.20/x
  3. Step 3: Cross multiply
    458,666.20x = 687,999.30 × 121,706.20
  4. Step 4: Simplify right side
    458,666.20x = 83,733,780,405.66
  5. Step 5: Solve for x
    x = 83,733,780,405.66/458,666.20
  6. Step 6: Final answer
    x = 182,559.30

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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.