Home / 781,977.36-1,079,128.08-424,281.36

Finding the Fourth Proportional to 781,977.36, 1,079,128.08 and 424,281.36

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Solution

The fourth proportional to 781,977.36, 1,079,128.08 and 424,281.36 is: 585,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,977.36 : 1,079,128.08 = 424,281.36 : x
  2. Step 2: Convert to fraction form
    781,977.36/1,079,128.08 = 424,281.36/x
  3. Step 3: Cross multiply
    781,977.36x = 1,079,128.08 × 424,281.36
  4. Step 4: Simplify right side
    781,977.36x = 457,853,929,396.59
  5. Step 5: Solve for x
    x = 457,853,929,396.59/781,977.36
  6. Step 6: Final answer
    x = 585,507.91

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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.