Home / 1,020,456.38-1,529,348.61-420,719.42

Finding the Fourth Proportional to 1,020,456.38, 1,529,348.61 and 420,719.42

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Solution

The fourth proportional to 1,020,456.38, 1,529,348.61 and 420,719.42 is: 630,528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,456.38 : 1,529,348.61 = 420,719.42 : x
  2. Step 2: Convert to fraction form
    1,020,456.38/1,529,348.61 = 420,719.42/x
  3. Step 3: Cross multiply
    1,020,456.38x = 1,529,348.61 × 420,719.42
  4. Step 4: Simplify right side
    1,020,456.38x = 643,426,660,177.01
  5. Step 5: Solve for x
    x = 643,426,660,177.01/1,020,456.38
  6. Step 6: Final answer
    x = 630,528.33

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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.