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Finding the Fourth Proportional to 1,264,401.60, 1,893,837.60 and 981,700.80

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Solution

The fourth proportional to 1,264,401.60, 1,893,837.60 and 981,700.80 is: 1,470,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,401.60 : 1,893,837.60 = 981,700.80 : x
  2. Step 2: Convert to fraction form
    1,264,401.60/1,893,837.60 = 981,700.80/x
  3. Step 3: Cross multiply
    1,264,401.60x = 1,893,837.60 × 981,700.80
  4. Step 4: Simplify right side
    1,264,401.60x = 1,859,181,886,990.08
  5. Step 5: Solve for x
    x = 1,859,181,886,990.08/1,264,401.60
  6. Step 6: Final answer
    x = 1,470,404.57

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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.