Home / 717,853.44-990,681.76-395,563.34

Finding the Fourth Proportional to 717,853.44, 990,681.76 and 395,563.34

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Solution

The fourth proportional to 717,853.44, 990,681.76 and 395,563.34 is: 545,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,853.44 : 990,681.76 = 395,563.34 : x
  2. Step 2: Convert to fraction form
    717,853.44/990,681.76 = 395,563.34/x
  3. Step 3: Cross multiply
    717,853.44x = 990,681.76 × 395,563.34
  4. Step 4: Simplify right side
    717,853.44x = 391,877,385,862.68
  5. Step 5: Solve for x
    x = 391,877,385,862.68/717,853.44
  6. Step 6: Final answer
    x = 545,901.66

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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.