Home / 905,275.62-1,249,280.64-497,403.54

Finding the Fourth Proportional to 905,275.62, 1,249,280.64 and 497,403.54

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Solution

The fourth proportional to 905,275.62, 1,249,280.64 and 497,403.54 is: 686,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,275.62 : 1,249,280.64 = 497,403.54 : x
  2. Step 2: Convert to fraction form
    905,275.62/1,249,280.64 = 497,403.54/x
  3. Step 3: Cross multiply
    905,275.62x = 1,249,280.64 × 497,403.54
  4. Step 4: Simplify right side
    905,275.62x = 621,396,612,789.47
  5. Step 5: Solve for x
    x = 621,396,612,789.47/905,275.62
  6. Step 6: Final answer
    x = 686,417.04

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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.