Home / 420,400,061.80-580,425,069.54-376,270,639.72

Finding the Fourth Proportional to 420,400,061.80, 580,425,069.54 and 376,270,639.72

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Solution

The fourth proportional to 420,400,061.80, 580,425,069.54 and 376,270,639.72 is: 519,497,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,400,061.80 : 580,425,069.54 = 376,270,639.72 : x
  2. Step 2: Convert to fraction form
    420,400,061.80/580,425,069.54 = 376,270,639.72/x
  3. Step 3: Cross multiply
    420,400,061.80x = 580,425,069.54 × 376,270,639.72
  4. Step 4: Simplify right side
    420,400,061.80x = 218,396,912,225,341,280
  5. Step 5: Solve for x
    x = 218,396,912,225,341,280/420,400,061.80
  6. Step 6: Final answer
    x = 519,497,811.89

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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.