Home / 486,024.30-729,036.45-432,880.20

Finding the Fourth Proportional to 486,024.30, 729,036.45 and 432,880.20

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Solution

The fourth proportional to 486,024.30, 729,036.45 and 432,880.20 is: 649,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,024.30 : 729,036.45 = 432,880.20 : x
  2. Step 2: Convert to fraction form
    486,024.30/729,036.45 = 432,880.20/x
  3. Step 3: Cross multiply
    486,024.30x = 729,036.45 × 432,880.20
  4. Step 4: Simplify right side
    486,024.30x = 315,585,444,283.29
  5. Step 5: Solve for x
    x = 315,585,444,283.29/486,024.30
  6. Step 6: Final answer
    x = 649,320.30

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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.