Home / 765,721.77-1,148,755.48-253,385.59

Finding the Fourth Proportional to 765,721.77, 1,148,755.48 and 253,385.59

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Solution

The fourth proportional to 765,721.77, 1,148,755.48 and 253,385.59 is: 380,135.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,721.77 : 1,148,755.48 = 253,385.59 : x
  2. Step 2: Convert to fraction form
    765,721.77/1,148,755.48 = 253,385.59/x
  3. Step 3: Cross multiply
    765,721.77x = 1,148,755.48 × 253,385.59
  4. Step 4: Simplify right side
    765,721.77x = 291,078,085,065.53
  5. Step 5: Solve for x
    x = 291,078,085,065.53/765,721.77
  6. Step 6: Final answer
    x = 380,135.58

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1.5x scale

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.