Home / 717,385.58-990,036.85-395,095.59

Finding the Fourth Proportional to 717,385.58, 990,036.85 and 395,095.59

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Solution

The fourth proportional to 717,385.58, 990,036.85 and 395,095.59 is: 545,256.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,385.58 : 990,036.85 = 395,095.59 : x
  2. Step 2: Convert to fraction form
    717,385.58/990,036.85 = 395,095.59/x
  3. Step 3: Cross multiply
    717,385.58x = 990,036.85 × 395,095.59
  4. Step 4: Simplify right side
    717,385.58x = 391,159,192,384.75
  5. Step 5: Solve for x
    x = 391,159,192,384.75/717,385.58
  6. Step 6: Final answer
    x = 545,256.56

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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.