Home / 1,290,074.95-1,780,337.68-709,322.57

Finding the Fourth Proportional to 1,290,074.95, 1,780,337.68 and 709,322.57

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Solution

The fourth proportional to 1,290,074.95, 1,780,337.68 and 709,322.57 is: 978,883.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,074.95 : 1,780,337.68 = 709,322.57 : x
  2. Step 2: Convert to fraction form
    1,290,074.95/1,780,337.68 = 709,322.57/x
  3. Step 3: Cross multiply
    1,290,074.95x = 1,780,337.68 × 709,322.57
  4. Step 4: Simplify right side
    1,290,074.95x = 1,262,833,694,646.71
  5. Step 5: Solve for x
    x = 1,262,833,694,646.71/1,290,074.95
  6. Step 6: Final answer
    x = 978,883.97

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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.