Home / 865,999.63-1,195,060.79-478,800.17

Finding the Fourth Proportional to 865,999.63, 1,195,060.79 and 478,800.17

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Solution

The fourth proportional to 865,999.63, 1,195,060.79 and 478,800.17 is: 660,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,999.63 : 1,195,060.79 = 478,800.17 : x
  2. Step 2: Convert to fraction form
    865,999.63/1,195,060.79 = 478,800.17/x
  3. Step 3: Cross multiply
    865,999.63x = 1,195,060.79 × 478,800.17
  4. Step 4: Simplify right side
    865,999.63x = 572,195,304,181.52
  5. Step 5: Solve for x
    x = 572,195,304,181.52/865,999.63
  6. Step 6: Final answer
    x = 660,733.89

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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.