Home / 1,282,406.40-1,921,075.20-1,124,812.80

Finding the Fourth Proportional to 1,282,406.40, 1,921,075.20 and 1,124,812.80

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Solution

The fourth proportional to 1,282,406.40, 1,921,075.20 and 1,124,812.80 is: 1,684,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,406.40 : 1,921,075.20 = 1,124,812.80 : x
  2. Step 2: Convert to fraction form
    1,282,406.40/1,921,075.20 = 1,124,812.80/x
  3. Step 3: Cross multiply
    1,282,406.40x = 1,921,075.20 × 1,124,812.80
  4. Step 4: Simplify right side
    1,282,406.40x = 2,160,849,974,722.56
  5. Step 5: Solve for x
    x = 2,160,849,974,722.56/1,282,406.40
  6. Step 6: Final answer
    x = 1,684,996.25

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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.