Home / 717,812.18-990,624.93-395,522.19

Finding the Fourth Proportional to 717,812.18, 990,624.93 and 395,522.19

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Solution

The fourth proportional to 717,812.18, 990,624.93 and 395,522.19 is: 545,844.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,812.18 : 990,624.93 = 395,522.19 : x
  2. Step 2: Convert to fraction form
    717,812.18/990,624.93 = 395,522.19/x
  3. Step 3: Cross multiply
    717,812.18x = 990,624.93 × 395,522.19
  4. Step 4: Simplify right side
    717,812.18x = 391,814,138,316.83
  5. Step 5: Solve for x
    x = 391,814,138,316.83/717,812.18
  6. Step 6: Final answer
    x = 545,844.93

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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.