Home / 717,583.16-990,260.16-395,285.78

Finding the Fourth Proportional to 717,583.16, 990,260.16 and 395,285.78

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Solution

The fourth proportional to 717,583.16, 990,260.16 and 395,285.78 is: 545,491.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,583.16 : 990,260.16 = 395,285.78 : x
  2. Step 2: Convert to fraction form
    717,583.16/990,260.16 = 395,285.78/x
  3. Step 3: Cross multiply
    717,583.16x = 990,260.16 × 395,285.78
  4. Step 4: Simplify right side
    717,583.16x = 391,435,759,748.53
  5. Step 5: Solve for x
    x = 391,435,759,748.53/717,583.16
  6. Step 6: Final answer
    x = 545,491.84

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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.