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Finding the Fourth Proportional to 910,961, 1,257,126.27 and 508,553

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Solution

The fourth proportional to 910,961, 1,257,126.27 and 508,553 is: 701,803.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,961 : 1,257,126.27 = 508,553 : x
  2. Step 2: Convert to fraction form
    910,961/1,257,126.27 = 508,553/x
  3. Step 3: Cross multiply
    910,961x = 1,257,126.27 × 508,553
  4. Step 4: Simplify right side
    910,961x = 639,315,335,987.31
  5. Step 5: Solve for x
    x = 639,315,335,987.31/910,961
  6. Step 6: Final answer
    x = 701,803.19

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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.