Home / 831,875.20-1,248,244.80-388,643.20

Finding the Fourth Proportional to 831,875.20, 1,248,244.80 and 388,643.20

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Solution

The fourth proportional to 831,875.20, 1,248,244.80 and 388,643.20 is: 583,166.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,875.20 : 1,248,244.80 = 388,643.20 : x
  2. Step 2: Convert to fraction form
    831,875.20/1,248,244.80 = 388,643.20/x
  3. Step 3: Cross multiply
    831,875.20x = 1,248,244.80 × 388,643.20
  4. Step 4: Simplify right side
    831,875.20x = 485,121,853,455.36
  5. Step 5: Solve for x
    x = 485,121,853,455.36/831,875.20
  6. Step 6: Final answer
    x = 583,166.63

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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.