Home / 717,273.74-989,816.10-394,985.58

Finding the Fourth Proportional to 717,273.74, 989,816.10 and 394,985.58

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Solution

The fourth proportional to 717,273.74, 989,816.10 and 394,985.58 is: 545,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,273.74 : 989,816.10 = 394,985.58 : x
  2. Step 2: Convert to fraction form
    717,273.74/989,816.10 = 394,985.58/x
  3. Step 3: Cross multiply
    717,273.74x = 989,816.10 × 394,985.58
  4. Step 4: Simplify right side
    717,273.74x = 390,963,086,351.84
  5. Step 5: Solve for x
    x = 390,963,086,351.84/717,273.74
  6. Step 6: Final answer
    x = 545,068.18

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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.