Home / 987,574.10-1,480,474.20-388,943.60

Finding the Fourth Proportional to 987,574.10, 1,480,474.20 and 388,943.60

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Solution

The fourth proportional to 987,574.10, 1,480,474.20 and 388,943.60 is: 583,066.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,574.10 : 1,480,474.20 = 388,943.60 : x
  2. Step 2: Convert to fraction form
    987,574.10/1,480,474.20 = 388,943.60/x
  3. Step 3: Cross multiply
    987,574.10x = 1,480,474.20 × 388,943.60
  4. Step 4: Simplify right side
    987,574.10x = 575,820,965,055.12
  5. Step 5: Solve for x
    x = 575,820,965,055.12/987,574.10
  6. Step 6: Final answer
    x = 583,066.09

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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.