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Finding the Fourth Proportional to 875,859.40, 1,312,233.90 and 819,872.20

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Solution

The fourth proportional to 875,859.40, 1,312,233.90 and 819,872.20 is: 1,228,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,859.40 : 1,312,233.90 = 819,872.20 : x
  2. Step 2: Convert to fraction form
    875,859.40/1,312,233.90 = 819,872.20/x
  3. Step 3: Cross multiply
    875,859.40x = 1,312,233.90 × 819,872.20
  4. Step 4: Simplify right side
    875,859.40x = 1,075,864,094,507.58
  5. Step 5: Solve for x
    x = 1,075,864,094,507.58/875,859.40
  6. Step 6: Final answer
    x = 1,228,352.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.