Home / 852,437.80-1,278,008.70-432,015.40

Finding the Fourth Proportional to 852,437.80, 1,278,008.70 and 432,015.40

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Solution

The fourth proportional to 852,437.80, 1,278,008.70 and 432,015.40 is: 647,694.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,437.80 : 1,278,008.70 = 432,015.40 : x
  2. Step 2: Convert to fraction form
    852,437.80/1,278,008.70 = 432,015.40/x
  3. Step 3: Cross multiply
    852,437.80x = 1,278,008.70 × 432,015.40
  4. Step 4: Simplify right side
    852,437.80x = 552,119,439,733.98
  5. Step 5: Solve for x
    x = 552,119,439,733.98/852,437.80
  6. Step 6: Final answer
    x = 647,694.69

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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.