Home / 570,890.84-787,795.50-312,716.18

Finding the Fourth Proportional to 570,890.84, 787,795.50 and 312,716.18

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Solution

The fourth proportional to 570,890.84, 787,795.50 and 312,716.18 is: 431,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,890.84 : 787,795.50 = 312,716.18 : x
  2. Step 2: Convert to fraction form
    570,890.84/787,795.50 = 312,716.18/x
  3. Step 3: Cross multiply
    570,890.84x = 787,795.50 × 312,716.18
  4. Step 4: Simplify right side
    570,890.84x = 246,356,399,381.19
  5. Step 5: Solve for x
    x = 246,356,399,381.19/570,890.84
  6. Step 6: Final answer
    x = 431,529.78

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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.