Home / 891,870.36-1,338,009.98-386,516.18

Finding the Fourth Proportional to 891,870.36, 1,338,009.98 and 386,516.18

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Solution

The fourth proportional to 891,870.36, 1,338,009.98 and 386,516.18 is: 579,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,870.36 : 1,338,009.98 = 386,516.18 : x
  2. Step 2: Convert to fraction form
    891,870.36/1,338,009.98 = 386,516.18/x
  3. Step 3: Cross multiply
    891,870.36x = 1,338,009.98 × 386,516.18
  4. Step 4: Simplify right side
    891,870.36x = 517,162,497,648.85
  5. Step 5: Solve for x
    x = 517,162,497,648.85/891,870.36
  6. Step 6: Final answer
    x = 579,862.86

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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.