Home / 865,398.69-1,194,247.20-478,203.31

Finding the Fourth Proportional to 865,398.69, 1,194,247.20 and 478,203.31

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Solution

The fourth proportional to 865,398.69, 1,194,247.20 and 478,203.31 is: 659,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,398.69 : 1,194,247.20 = 478,203.31 : x
  2. Step 2: Convert to fraction form
    865,398.69/1,194,247.20 = 478,203.31/x
  3. Step 3: Cross multiply
    865,398.69x = 1,194,247.20 × 478,203.31
  4. Step 4: Simplify right side
    865,398.69x = 571,092,963,998.23
  5. Step 5: Solve for x
    x = 571,092,963,998.23/865,398.69
  6. Step 6: Final answer
    x = 659,918.91

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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.