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Finding the Fourth Proportional to 841,453.86, 1,262,640 and 487,159.86

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Solution

The fourth proportional to 841,453.86, 1,262,640 and 487,159.86 is: 731,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,453.86 : 1,262,640 = 487,159.86 : x
  2. Step 2: Convert to fraction form
    841,453.86/1,262,640 = 487,159.86/x
  3. Step 3: Cross multiply
    841,453.86x = 1,262,640 × 487,159.86
  4. Step 4: Simplify right side
    841,453.86x = 615,107,525,630.40
  5. Step 5: Solve for x
    x = 615,107,525,630.40/841,453.86
  6. Step 6: Final answer
    x = 731,005.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.