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Finding the Fourth Proportional to 722,461.76, 996,953.28 and 400,152.68

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Solution

The fourth proportional to 722,461.76, 996,953.28 and 400,152.68 is: 552,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,461.76 : 996,953.28 = 400,152.68 : x
  2. Step 2: Convert to fraction form
    722,461.76/996,953.28 = 400,152.68/x
  3. Step 3: Cross multiply
    722,461.76x = 996,953.28 × 400,152.68
  4. Step 4: Simplify right side
    722,461.76x = 398,933,526,826.79
  5. Step 5: Solve for x
    x = 398,933,526,826.79/722,461.76
  6. Step 6: Final answer
    x = 552,186.36

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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.