Home / 717,895.10-990,701.79-395,616.76

Finding the Fourth Proportional to 717,895.10, 990,701.79 and 395,616.76

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Solution

The fourth proportional to 717,895.10, 990,701.79 and 395,616.76 is: 545,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,895.10 : 990,701.79 = 395,616.76 : x
  2. Step 2: Convert to fraction form
    717,895.10/990,701.79 = 395,616.76/x
  3. Step 3: Cross multiply
    717,895.10x = 990,701.79 × 395,616.76
  4. Step 4: Simplify right side
    717,895.10x = 391,938,228,325.68
  5. Step 5: Solve for x
    x = 391,938,228,325.68/717,895.10
  6. Step 6: Final answer
    x = 545,954.73

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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.