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Finding the Fourth Proportional to 615,508.77, 849,852.10 and 397,846.23

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Solution

The fourth proportional to 615,508.77, 849,852.10 and 397,846.23 is: 549,318.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,508.77 : 849,852.10 = 397,846.23 : x
  2. Step 2: Convert to fraction form
    615,508.77/849,852.10 = 397,846.23/x
  3. Step 3: Cross multiply
    615,508.77x = 849,852.10 × 397,846.23
  4. Step 4: Simplify right side
    615,508.77x = 338,110,456,133.36
  5. Step 5: Solve for x
    x = 338,110,456,133.36/615,508.77
  6. Step 6: Final answer
    x = 549,318.66

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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.