Home / 1,213,386.30-1,818,662.46-912,901.62

Finding the Fourth Proportional to 1,213,386.30, 1,818,662.46 and 912,901.62

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Solution

The fourth proportional to 1,213,386.30, 1,818,662.46 and 912,901.62 is: 1,368,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,386.30 : 1,818,662.46 = 912,901.62 : x
  2. Step 2: Convert to fraction form
    1,213,386.30/1,818,662.46 = 912,901.62/x
  3. Step 3: Cross multiply
    1,213,386.30x = 1,818,662.46 × 912,901.62
  4. Step 4: Simplify right side
    1,213,386.30x = 1,660,259,905,967.19
  5. Step 5: Solve for x
    x = 1,660,259,905,967.19/1,213,386.30
  6. Step 6: Final answer
    x = 1,368,286.35

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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.