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Finding the Fourth Proportional to 485,560.22, 669,860.47 and 463,047.78

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Solution

The fourth proportional to 485,560.22, 669,860.47 and 463,047.78 is: 638,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,560.22 : 669,860.47 = 463,047.78 : x
  2. Step 2: Convert to fraction form
    485,560.22/669,860.47 = 463,047.78/x
  3. Step 3: Cross multiply
    485,560.22x = 669,860.47 × 463,047.78
  4. Step 4: Simplify right side
    485,560.22x = 310,177,402,385.64
  5. Step 5: Solve for x
    x = 310,177,402,385.64/485,560.22
  6. Step 6: Final answer
    x = 638,803.17

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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.