Home / 1,259,320.80-1,888,981.20-692,450.40

Finding the Fourth Proportional to 1,259,320.80, 1,888,981.20 and 692,450.40

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Solution

The fourth proportional to 1,259,320.80, 1,888,981.20 and 692,450.40 is: 1,038,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,320.80 : 1,888,981.20 = 692,450.40 : x
  2. Step 2: Convert to fraction form
    1,259,320.80/1,888,981.20 = 692,450.40/x
  3. Step 3: Cross multiply
    1,259,320.80x = 1,888,981.20 × 692,450.40
  4. Step 4: Simplify right side
    1,259,320.80x = 1,308,025,787,532.48
  5. Step 5: Solve for x
    x = 1,308,025,787,532.48/1,259,320.80
  6. Step 6: Final answer
    x = 1,038,675.60

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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.