Home / 643,264.20-964,896.30-288,970.20

Finding the Fourth Proportional to 643,264.20, 964,896.30 and 288,970.20

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Solution

The fourth proportional to 643,264.20, 964,896.30 and 288,970.20 is: 433,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,264.20 : 964,896.30 = 288,970.20 : x
  2. Step 2: Convert to fraction form
    643,264.20/964,896.30 = 288,970.20/x
  3. Step 3: Cross multiply
    643,264.20x = 964,896.30 × 288,970.20
  4. Step 4: Simplify right side
    643,264.20x = 278,826,276,790.26
  5. Step 5: Solve for x
    x = 278,826,276,790.26/643,264.20
  6. Step 6: Final answer
    x = 433,455.30

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Similar ratio
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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.