Home / 718,904.77-992,083.04-396,628.45

Finding the Fourth Proportional to 718,904.77, 992,083.04 and 396,628.45

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Solution

The fourth proportional to 718,904.77, 992,083.04 and 396,628.45 is: 547,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,904.77 : 992,083.04 = 396,628.45 : x
  2. Step 2: Convert to fraction form
    718,904.77/992,083.04 = 396,628.45/x
  3. Step 3: Cross multiply
    718,904.77x = 992,083.04 × 396,628.45
  4. Step 4: Simplify right side
    718,904.77x = 393,488,355,450.50
  5. Step 5: Solve for x
    x = 393,488,355,450.50/718,904.77
  6. Step 6: Final answer
    x = 547,344.20

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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.