Home / 1,431,956.10-1,976,061.50-778,561.50

Finding the Fourth Proportional to 1,431,956.10, 1,976,061.50 and 778,561.50

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Solution

The fourth proportional to 1,431,956.10, 1,976,061.50 and 778,561.50 is: 1,074,394.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,956.10 : 1,976,061.50 = 778,561.50 : x
  2. Step 2: Convert to fraction form
    1,431,956.10/1,976,061.50 = 778,561.50/x
  3. Step 3: Cross multiply
    1,431,956.10x = 1,976,061.50 × 778,561.50
  4. Step 4: Simplify right side
    1,431,956.10x = 1,538,485,405,532.25
  5. Step 5: Solve for x
    x = 1,538,485,405,532.25/1,431,956.10
  6. Step 6: Final answer
    x = 1,074,394.25

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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.