Home / 452,638.71-677,986.11-426,140.46

Finding the Fourth Proportional to 452,638.71, 677,986.11 and 426,140.46

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Solution

The fourth proportional to 452,638.71, 677,986.11 and 426,140.46 is: 638,295.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,638.71 : 677,986.11 = 426,140.46 : x
  2. Step 2: Convert to fraction form
    452,638.71/677,986.11 = 426,140.46/x
  3. Step 3: Cross multiply
    452,638.71x = 677,986.11 × 426,140.46
  4. Step 4: Simplify right side
    452,638.71x = 288,917,312,789.01
  5. Step 5: Solve for x
    x = 288,917,312,789.01/452,638.71
  6. Step 6: Final answer
    x = 638,295.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.