Home / 1,431,955.10-1,976,060.12-778,560.50

Finding the Fourth Proportional to 1,431,955.10, 1,976,060.12 and 778,560.50

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Solution

The fourth proportional to 1,431,955.10, 1,976,060.12 and 778,560.50 is: 1,074,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,955.10 : 1,976,060.12 = 778,560.50 : x
  2. Step 2: Convert to fraction form
    1,431,955.10/1,976,060.12 = 778,560.50/x
  3. Step 3: Cross multiply
    1,431,955.10x = 1,976,060.12 × 778,560.50
  4. Step 4: Simplify right side
    1,431,955.10x = 1,538,482,355,057.26
  5. Step 5: Solve for x
    x = 1,538,482,355,057.26/1,431,955.10
  6. Step 6: Final answer
    x = 1,074,392.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.