Home / 919,319.54-1,378,979.32-288,282.56

Finding the Fourth Proportional to 919,319.54, 1,378,979.32 and 288,282.56

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Solution

The fourth proportional to 919,319.54, 1,378,979.32 and 288,282.56 is: 432,423.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,319.54 : 1,378,979.32 = 288,282.56 : x
  2. Step 2: Convert to fraction form
    919,319.54/1,378,979.32 = 288,282.56/x
  3. Step 3: Cross multiply
    919,319.54x = 1,378,979.32 × 288,282.56
  4. Step 4: Simplify right side
    919,319.54x = 397,535,691,283.40
  5. Step 5: Solve for x
    x = 397,535,691,283.40/919,319.54
  6. Step 6: Final answer
    x = 432,423.84

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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.