Home / 1,431,816.87-1,975,944.69-778,486.83

Finding the Fourth Proportional to 1,431,816.87, 1,975,944.69 and 778,486.83

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Solution

The fourth proportional to 1,431,816.87, 1,975,944.69 and 778,486.83 is: 1,074,332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,816.87 : 1,975,944.69 = 778,486.83 : x
  2. Step 2: Convert to fraction form
    1,431,816.87/1,975,944.69 = 778,486.83/x
  3. Step 3: Cross multiply
    1,431,816.87x = 1,975,944.69 × 778,486.83
  4. Step 4: Simplify right side
    1,431,816.87x = 1,538,246,917,973.43
  5. Step 5: Solve for x
    x = 1,538,246,917,973.43/1,431,816.87
  6. Step 6: Final answer
    x = 1,074,332.17

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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.