Home / 819,253.92-1,228,880.88-258,332.16

Finding the Fourth Proportional to 819,253.92, 1,228,880.88 and 258,332.16

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Solution

The fourth proportional to 819,253.92, 1,228,880.88 and 258,332.16 is: 387,498.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,253.92 : 1,228,880.88 = 258,332.16 : x
  2. Step 2: Convert to fraction form
    819,253.92/1,228,880.88 = 258,332.16/x
  3. Step 3: Cross multiply
    819,253.92x = 1,228,880.88 × 258,332.16
  4. Step 4: Simplify right side
    819,253.92x = 317,459,452,113.10
  5. Step 5: Solve for x
    x = 317,459,452,113.10/819,253.92
  6. Step 6: Final answer
    x = 387,498.24

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Double scale
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Similar ratio
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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.