Home / 726,721.10-1,002,922.23-404,430.20

Finding the Fourth Proportional to 726,721.10, 1,002,922.23 and 404,430.20

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Solution

The fourth proportional to 726,721.10, 1,002,922.23 and 404,430.20 is: 558,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,721.10 : 1,002,922.23 = 404,430.20 : x
  2. Step 2: Convert to fraction form
    726,721.10/1,002,922.23 = 404,430.20/x
  3. Step 3: Cross multiply
    726,721.10x = 1,002,922.23 × 404,430.20
  4. Step 4: Simplify right side
    726,721.10x = 405,612,038,063.35
  5. Step 5: Solve for x
    x = 405,612,038,063.35/726,721.10
  6. Step 6: Final answer
    x = 558,139.89

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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.