Home / 859,870.26-1,289,661.38-260,688.14

Finding the Fourth Proportional to 859,870.26, 1,289,661.38 and 260,688.14

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Solution

The fourth proportional to 859,870.26, 1,289,661.38 and 260,688.14 is: 390,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,870.26 : 1,289,661.38 = 260,688.14 : x
  2. Step 2: Convert to fraction form
    859,870.26/1,289,661.38 = 260,688.14/x
  3. Step 3: Cross multiply
    859,870.26x = 1,289,661.38 × 260,688.14
  4. Step 4: Simplify right side
    859,870.26x = 336,199,426,382.03
  5. Step 5: Solve for x
    x = 336,199,426,382.03/859,870.26
  6. Step 6: Final answer
    x = 390,988.55

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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.