Home / 909,871.57-1,364,758.15-278,787.21

Finding the Fourth Proportional to 909,871.57, 1,364,758.15 and 278,787.21

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Solution

The fourth proportional to 909,871.57, 1,364,758.15 and 278,787.21 is: 418,165.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,871.57 : 1,364,758.15 = 278,787.21 : x
  2. Step 2: Convert to fraction form
    909,871.57/1,364,758.15 = 278,787.21/x
  3. Step 3: Cross multiply
    909,871.57x = 1,364,758.15 × 278,787.21
  4. Step 4: Simplify right side
    909,871.57x = 380,477,116,963.26
  5. Step 5: Solve for x
    x = 380,477,116,963.26/909,871.57
  6. Step 6: Final answer
    x = 418,165.74

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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.