Home / 1,143,643.80-1,715,465.70-513,787.80

Finding the Fourth Proportional to 1,143,643.80, 1,715,465.70 and 513,787.80

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Solution

The fourth proportional to 1,143,643.80, 1,715,465.70 and 513,787.80 is: 770,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,643.80 : 1,715,465.70 = 513,787.80 : x
  2. Step 2: Convert to fraction form
    1,143,643.80/1,715,465.70 = 513,787.80/x
  3. Step 3: Cross multiply
    1,143,643.80x = 1,715,465.70 × 513,787.80
  4. Step 4: Simplify right side
    1,143,643.80x = 881,385,347,978.46
  5. Step 5: Solve for x
    x = 881,385,347,978.46/1,143,643.80
  6. Step 6: Final answer
    x = 770,681.70

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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.