Home / 1,386,961.40-2,080,669.81-427,417.18

Finding the Fourth Proportional to 1,386,961.40, 2,080,669.81 and 427,417.18

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Solution

The fourth proportional to 1,386,961.40, 2,080,669.81 and 427,417.18 is: 641,195.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,961.40 : 2,080,669.81 = 427,417.18 : x
  2. Step 2: Convert to fraction form
    1,386,961.40/2,080,669.81 = 427,417.18/x
  3. Step 3: Cross multiply
    1,386,961.40x = 2,080,669.81 × 427,417.18
  4. Step 4: Simplify right side
    1,386,961.40x = 889,314,020,564.25
  5. Step 5: Solve for x
    x = 889,314,020,564.25/1,386,961.40
  6. Step 6: Final answer
    x = 641,195.94

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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.