Home / 717,897.10-990,704.55-395,618.76

Finding the Fourth Proportional to 717,897.10, 990,704.55 and 395,618.76

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Solution

The fourth proportional to 717,897.10, 990,704.55 and 395,618.76 is: 545,957.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,897.10 : 990,704.55 = 395,618.76 : x
  2. Step 2: Convert to fraction form
    717,897.10/990,704.55 = 395,618.76/x
  3. Step 3: Cross multiply
    717,897.10x = 990,704.55 × 395,618.76
  4. Step 4: Simplify right side
    717,897.10x = 391,941,305,597.36
  5. Step 5: Solve for x
    x = 391,941,305,597.36/717,897.10
  6. Step 6: Final answer
    x = 545,957.50

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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.