Home / 641,434.95-885,120.12-383,260.50

Finding the Fourth Proportional to 641,434.95, 885,120.12 and 383,260.50

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Solution

The fourth proportional to 641,434.95, 885,120.12 and 383,260.50 is: 528,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,434.95 : 885,120.12 = 383,260.50 : x
  2. Step 2: Convert to fraction form
    641,434.95/885,120.12 = 383,260.50/x
  3. Step 3: Cross multiply
    641,434.95x = 885,120.12 × 383,260.50
  4. Step 4: Simplify right side
    641,434.95x = 339,231,579,751.26
  5. Step 5: Solve for x
    x = 339,231,579,751.26/641,434.95
  6. Step 6: Final answer
    x = 528,863.57

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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.