Home / 717,396.59-990,052.07-395,106.60

Finding the Fourth Proportional to 717,396.59, 990,052.07 and 395,106.60

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Solution

The fourth proportional to 717,396.59, 990,052.07 and 395,106.60 is: 545,271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,396.59 : 990,052.07 = 395,106.60 : x
  2. Step 2: Convert to fraction form
    717,396.59/990,052.07 = 395,106.60/x
  3. Step 3: Cross multiply
    717,396.59x = 990,052.07 × 395,106.60
  4. Step 4: Simplify right side
    717,396.59x = 391,176,111,160.30
  5. Step 5: Solve for x
    x = 391,176,111,160.30/717,396.59
  6. Step 6: Final answer
    x = 545,271.77

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.