Home / 742,123.28-1,024,130.40-419,826.56

Finding the Fourth Proportional to 742,123.28, 1,024,130.40 and 419,826.56

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Solution

The fourth proportional to 742,123.28, 1,024,130.40 and 419,826.56 is: 579,360.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,123.28 : 1,024,130.40 = 419,826.56 : x
  2. Step 2: Convert to fraction form
    742,123.28/1,024,130.40 = 419,826.56/x
  3. Step 3: Cross multiply
    742,123.28x = 1,024,130.40 × 419,826.56
  4. Step 4: Simplify right side
    742,123.28x = 429,957,142,823.42
  5. Step 5: Solve for x
    x = 429,957,142,823.42/742,123.28
  6. Step 6: Final answer
    x = 579,360.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.