Home / 545,078.25-752,038.68-309,293.46

Finding the Fourth Proportional to 545,078.25, 752,038.68 and 309,293.46

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Solution

The fourth proportional to 545,078.25, 752,038.68 and 309,293.46 is: 426,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,078.25 : 752,038.68 = 309,293.46 : x
  2. Step 2: Convert to fraction form
    545,078.25/752,038.68 = 309,293.46/x
  3. Step 3: Cross multiply
    545,078.25x = 752,038.68 × 309,293.46
  4. Step 4: Simplify right side
    545,078.25x = 232,600,645,391.03
  5. Step 5: Solve for x
    x = 232,600,645,391.03/545,078.25
  6. Step 6: Final answer
    x = 426,728.91

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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.