Home / 1,290,256.75-1,780,599.95-709,524.15

Finding the Fourth Proportional to 1,290,256.75, 1,780,599.95 and 709,524.15

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Solution

The fourth proportional to 1,290,256.75, 1,780,599.95 and 709,524.15 is: 979,168.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,256.75 : 1,780,599.95 = 709,524.15 : x
  2. Step 2: Convert to fraction form
    1,290,256.75/1,780,599.95 = 709,524.15/x
  3. Step 3: Cross multiply
    1,290,256.75x = 1,780,599.95 × 709,524.15
  4. Step 4: Simplify right side
    1,290,256.75x = 1,263,378,666,013.79
  5. Step 5: Solve for x
    x = 1,263,378,666,013.79/1,290,256.75
  6. Step 6: Final answer
    x = 979,168.42

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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.