Home / 1,315,139.87-1,972,808.63-416,652.23

Finding the Fourth Proportional to 1,315,139.87, 1,972,808.63 and 416,652.23

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Solution

The fourth proportional to 1,315,139.87, 1,972,808.63 and 416,652.23 is: 625,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,139.87 : 1,972,808.63 = 416,652.23 : x
  2. Step 2: Convert to fraction form
    1,315,139.87/1,972,808.63 = 416,652.23/x
  3. Step 3: Cross multiply
    1,315,139.87x = 1,972,808.63 × 416,652.23
  4. Step 4: Simplify right side
    1,315,139.87x = 821,975,112,969.48
  5. Step 5: Solve for x
    x = 821,975,112,969.48/1,315,139.87
  6. Step 6: Final answer
    x = 625,009.65

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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.