Home / 919,275.03-1,378,912.82-288,238.05

Finding the Fourth Proportional to 919,275.03, 1,378,912.82 and 288,238.05

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Solution

The fourth proportional to 919,275.03, 1,378,912.82 and 288,238.05 is: 432,357.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,275.03 : 1,378,912.82 = 288,238.05 : x
  2. Step 2: Convert to fraction form
    919,275.03/1,378,912.82 = 288,238.05/x
  3. Step 3: Cross multiply
    919,275.03x = 1,378,912.82 × 288,238.05
  4. Step 4: Simplify right side
    919,275.03x = 397,455,140,915.61
  5. Step 5: Solve for x
    x = 397,455,140,915.61/919,275.03
  6. Step 6: Final answer
    x = 432,357.16

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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.