Home / 641,155.77-884,795.59-354,695.22

Finding the Fourth Proportional to 641,155.77, 884,795.59 and 354,695.22

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Solution

The fourth proportional to 641,155.77, 884,795.59 and 354,695.22 is: 489,479.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,155.77 : 884,795.59 = 354,695.22 : x
  2. Step 2: Convert to fraction form
    641,155.77/884,795.59 = 354,695.22/x
  3. Step 3: Cross multiply
    641,155.77x = 884,795.59 × 354,695.22
  4. Step 4: Simplify right side
    641,155.77x = 313,832,762,026.10
  5. Step 5: Solve for x
    x = 313,832,762,026.10/641,155.77
  6. Step 6: Final answer
    x = 489,479.75

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Double scale
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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.