Home / 900,936-1,243,288.35-487,471.52

Finding the Fourth Proportional to 900,936, 1,243,288.35 and 487,471.52

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Solution

The fourth proportional to 900,936, 1,243,288.35 and 487,471.52 is: 672,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,936 : 1,243,288.35 = 487,471.52 : x
  2. Step 2: Convert to fraction form
    900,936/1,243,288.35 = 487,471.52/x
  3. Step 3: Cross multiply
    900,936x = 1,243,288.35 × 487,471.52
  4. Step 4: Simplify right side
    900,936x = 606,067,664,881.01
  5. Step 5: Solve for x
    x = 606,067,664,881.01/900,936
  6. Step 6: Final answer
    x = 672,708.90

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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.