Home / 1,123,613.60-1,685,420.40-324,921.20

Finding the Fourth Proportional to 1,123,613.60, 1,685,420.40 and 324,921.20

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Solution

The fourth proportional to 1,123,613.60, 1,685,420.40 and 324,921.20 is: 487,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,613.60 : 1,685,420.40 = 324,921.20 : x
  2. Step 2: Convert to fraction form
    1,123,613.60/1,685,420.40 = 324,921.20/x
  3. Step 3: Cross multiply
    1,123,613.60x = 1,685,420.40 × 324,921.20
  4. Step 4: Simplify right side
    1,123,613.60x = 547,628,818,872.48
  5. Step 5: Solve for x
    x = 547,628,818,872.48/1,123,613.60
  6. Step 6: Final answer
    x = 487,381.80

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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.