Home / 742,499.06-1,024,652.85-420,209.78

Finding the Fourth Proportional to 742,499.06, 1,024,652.85 and 420,209.78

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Solution

The fourth proportional to 742,499.06, 1,024,652.85 and 420,209.78 is: 579,891.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,499.06 : 1,024,652.85 = 420,209.78 : x
  2. Step 2: Convert to fraction form
    742,499.06/1,024,652.85 = 420,209.78/x
  3. Step 3: Cross multiply
    742,499.06x = 1,024,652.85 × 420,209.78
  4. Step 4: Simplify right side
    742,499.06x = 430,569,148,674.87
  5. Step 5: Solve for x
    x = 430,569,148,674.87/742,499.06
  6. Step 6: Final answer
    x = 579,891.84

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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.