Home / 919,277.28-1,378,916.19-288,240.30

Finding the Fourth Proportional to 919,277.28, 1,378,916.19 and 288,240.30

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Solution

The fourth proportional to 919,277.28, 1,378,916.19 and 288,240.30 is: 432,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,277.28 : 1,378,916.19 = 288,240.30 : x
  2. Step 2: Convert to fraction form
    919,277.28/1,378,916.19 = 288,240.30/x
  3. Step 3: Cross multiply
    919,277.28x = 1,378,916.19 × 288,240.30
  4. Step 4: Simplify right side
    919,277.28x = 397,459,216,280.46
  5. Step 5: Solve for x
    x = 397,459,216,280.46/919,277.28
  6. Step 6: Final answer
    x = 432,360.53

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1.5x scale

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.