Home / 905,251.58-1,249,268.02-497,378.87

Finding the Fourth Proportional to 905,251.58, 1,249,268.02 and 497,378.87

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Solution

The fourth proportional to 905,251.58, 1,249,268.02 and 497,378.87 is: 686,394.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,251.58 : 1,249,268.02 = 497,378.87 : x
  2. Step 2: Convert to fraction form
    905,251.58/1,249,268.02 = 497,378.87/x
  3. Step 3: Cross multiply
    905,251.58x = 1,249,268.02 × 497,378.87
  4. Step 4: Simplify right side
    905,251.58x = 621,359,508,624.95
  5. Step 5: Solve for x
    x = 621,359,508,624.95/905,251.58
  6. Step 6: Final answer
    x = 686,394.29

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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.