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Finding the Fourth Proportional to 646,273.74, 891,840.38 and 359,793.92

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Solution

The fourth proportional to 646,273.74, 891,840.38 and 359,793.92 is: 496,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,273.74 : 891,840.38 = 359,793.92 : x
  2. Step 2: Convert to fraction form
    646,273.74/891,840.38 = 359,793.92/x
  3. Step 3: Cross multiply
    646,273.74x = 891,840.38 × 359,793.92
  4. Step 4: Simplify right side
    646,273.74x = 320,878,746,334.49
  5. Step 5: Solve for x
    x = 320,878,746,334.49/646,273.74
  6. Step 6: Final answer
    x = 496,505.93

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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.