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Finding the Fourth Proportional to 1,320,514.76, 1,822,319.70 and 716,902.76

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Solution

The fourth proportional to 1,320,514.76, 1,822,319.70 and 716,902.76 is: 989,330.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,514.76 : 1,822,319.70 = 716,902.76 : x
  2. Step 2: Convert to fraction form
    1,320,514.76/1,822,319.70 = 716,902.76/x
  3. Step 3: Cross multiply
    1,320,514.76x = 1,822,319.70 × 716,902.76
  4. Step 4: Simplify right side
    1,320,514.76x = 1,306,426,022,532.37
  5. Step 5: Solve for x
    x = 1,306,426,022,532.37/1,320,514.76
  6. Step 6: Final answer
    x = 989,330.87

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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.