Home / 781,728.96-1,078,784.16-424,032.96

Finding the Fourth Proportional to 781,728.96, 1,078,784.16 and 424,032.96

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Solution

The fourth proportional to 781,728.96, 1,078,784.16 and 424,032.96 is: 585,164.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,728.96 : 1,078,784.16 = 424,032.96 : x
  2. Step 2: Convert to fraction form
    781,728.96/1,078,784.16 = 424,032.96/x
  3. Step 3: Cross multiply
    781,728.96x = 1,078,784.16 × 424,032.96
  4. Step 4: Simplify right side
    781,728.96x = 457,440,040,565.91
  5. Step 5: Solve for x
    x = 457,440,040,565.91/781,728.96
  6. Step 6: Final answer
    x = 585,164.51

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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.