Home / 761,722.38-1,142,743.77-288,397.26

Finding the Fourth Proportional to 761,722.38, 1,142,743.77 and 288,397.26

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Solution

The fourth proportional to 761,722.38, 1,142,743.77 and 288,397.26 is: 432,656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,722.38 : 1,142,743.77 = 288,397.26 : x
  2. Step 2: Convert to fraction form
    761,722.38/1,142,743.77 = 288,397.26/x
  3. Step 3: Cross multiply
    761,722.38x = 1,142,743.77 × 288,397.26
  4. Step 4: Simplify right side
    761,722.38x = 329,564,172,150.07
  5. Step 5: Solve for x
    x = 329,564,172,150.07/761,722.38
  6. Step 6: Final answer
    x = 432,656.54

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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.