Home / 919,001.70-1,378,503.36-287,964.72

Finding the Fourth Proportional to 919,001.70, 1,378,503.36 and 287,964.72

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Solution

The fourth proportional to 919,001.70, 1,378,503.36 and 287,964.72 is: 431,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,001.70 : 1,378,503.36 = 287,964.72 : x
  2. Step 2: Convert to fraction form
    919,001.70/1,378,503.36 = 287,964.72/x
  3. Step 3: Cross multiply
    919,001.70x = 1,378,503.36 × 287,964.72
  4. Step 4: Simplify right side
    919,001.70x = 396,960,334,081.46
  5. Step 5: Solve for x
    x = 396,960,334,081.46/919,001.70
  6. Step 6: Final answer
    x = 431,947.33

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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.