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Finding the Fourth Proportional to 704,886.32, 972,576.23 and 398,962.68

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Solution

The fourth proportional to 704,886.32, 972,576.23 and 398,962.68 is: 550,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,886.32 : 972,576.23 = 398,962.68 : x
  2. Step 2: Convert to fraction form
    704,886.32/972,576.23 = 398,962.68/x
  3. Step 3: Cross multiply
    704,886.32x = 972,576.23 × 398,962.68
  4. Step 4: Simplify right side
    704,886.32x = 388,021,617,230.28
  5. Step 5: Solve for x
    x = 388,021,617,230.28/704,886.32
  6. Step 6: Final answer
    x = 550,474.04

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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.