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Finding the Fourth Proportional to 704,833.74, 972,660.12 and 398,968.11

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Solution

The fourth proportional to 704,833.74, 972,660.12 and 398,968.11 is: 550,570.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,833.74 : 972,660.12 = 398,968.11 : x
  2. Step 2: Convert to fraction form
    704,833.74/972,660.12 = 398,968.11/x
  3. Step 3: Cross multiply
    704,833.74x = 972,660.12 × 398,968.11
  4. Step 4: Simplify right side
    704,833.74x = 388,060,369,748.77
  5. Step 5: Solve for x
    x = 388,060,369,748.77/704,833.74
  6. Step 6: Final answer
    x = 550,570.08

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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.