Home / 1,276,278-1,761,275.20-703,338.72

Finding the Fourth Proportional to 1,276,278, 1,761,275.20 and 703,338.72

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Solution

The fourth proportional to 1,276,278, 1,761,275.20 and 703,338.72 is: 970,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,278 : 1,761,275.20 = 703,338.72 : x
  2. Step 2: Convert to fraction form
    1,276,278/1,761,275.20 = 703,338.72/x
  3. Step 3: Cross multiply
    1,276,278x = 1,761,275.20 × 703,338.72
  4. Step 4: Simplify right side
    1,276,278x = 1,238,773,044,735.74
  5. Step 5: Solve for x
    x = 1,238,773,044,735.74/1,276,278
  6. Step 6: Final answer
    x = 970,613.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.