Home / 761,431.20-1,141,628.40-288,045.60

Finding the Fourth Proportional to 761,431.20, 1,141,628.40 and 288,045.60

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Solution

The fourth proportional to 761,431.20, 1,141,628.40 and 288,045.60 is: 431,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,431.20 : 1,141,628.40 = 288,045.60 : x
  2. Step 2: Convert to fraction form
    761,431.20/1,141,628.40 = 288,045.60/x
  3. Step 3: Cross multiply
    761,431.20x = 1,141,628.40 × 288,045.60
  4. Step 4: Simplify right side
    761,431.20x = 328,841,037,455.04
  5. Step 5: Solve for x
    x = 328,841,037,455.04/761,431.20
  6. Step 6: Final answer
    x = 431,872.29

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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.