Home / 563,235,512.90-777,250,279.53-312,339,265.56

Finding the Fourth Proportional to 563,235,512.90, 777,250,279.53 and 312,339,265.56

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Solution

The fourth proportional to 563,235,512.90, 777,250,279.53 and 312,339,265.56 is: 431,020,018.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,235,512.90 : 777,250,279.53 = 312,339,265.56 : x
  2. Step 2: Convert to fraction form
    563,235,512.90/777,250,279.53 = 312,339,265.56/x
  3. Step 3: Cross multiply
    563,235,512.90x = 777,250,279.53 × 312,339,265.56
  4. Step 4: Simplify right side
    563,235,512.90x = 242,765,781,464,704,896
  5. Step 5: Solve for x
    x = 242,765,781,464,704,896/563,235,512.90
  6. Step 6: Final answer
    x = 431,020,018.99

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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.