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Finding the Fourth Proportional to 660,252.41, 915,809.84 and 642,752.22

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Solution

The fourth proportional to 660,252.41, 915,809.84 and 642,752.22 is: 891,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,252.41 : 915,809.84 = 642,752.22 : x
  2. Step 2: Convert to fraction form
    660,252.41/915,809.84 = 642,752.22/x
  3. Step 3: Cross multiply
    660,252.41x = 915,809.84 × 642,752.22
  4. Step 4: Simplify right side
    660,252.41x = 588,638,805,429.28
  5. Step 5: Solve for x
    x = 588,638,805,429.28/660,252.41
  6. Step 6: Final answer
    x = 891,536.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.