Home / 641,943.06-886,804.16-512,711.86

Finding the Fourth Proportional to 641,943.06, 886,804.16 and 512,711.86

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Solution

The fourth proportional to 641,943.06, 886,804.16 and 512,711.86 is: 708,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,943.06 : 886,804.16 = 512,711.86 : x
  2. Step 2: Convert to fraction form
    641,943.06/886,804.16 = 512,711.86/x
  3. Step 3: Cross multiply
    641,943.06x = 886,804.16 × 512,711.86
  4. Step 4: Simplify right side
    641,943.06x = 454,675,010,329.34
  5. Step 5: Solve for x
    x = 454,675,010,329.34/641,943.06
  6. Step 6: Final answer
    x = 708,279.35

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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.