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Finding the Fourth Proportional to 910,962, 1,257,127.65 and 508,554

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Solution

The fourth proportional to 910,962, 1,257,127.65 and 508,554 is: 701,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,962 : 1,257,127.65 = 508,554 : x
  2. Step 2: Convert to fraction form
    910,962/1,257,127.65 = 508,554/x
  3. Step 3: Cross multiply
    910,962x = 1,257,127.65 × 508,554
  4. Step 4: Simplify right side
    910,962x = 639,317,294,918.10
  5. Step 5: Solve for x
    x = 639,317,294,918.10/910,962
  6. Step 6: Final answer
    x = 701,804.57

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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.