Home / 424,486,839.94-636,860,206.59-217,371,895.72

Finding the Fourth Proportional to 424,486,839.94, 636,860,206.59 and 217,371,895.72

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Solution

The fourth proportional to 424,486,839.94, 636,860,206.59 and 217,371,895.72 is: 326,124,386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,486,839.94 : 636,860,206.59 = 217,371,895.72 : x
  2. Step 2: Convert to fraction form
    424,486,839.94/636,860,206.59 = 217,371,895.72/x
  3. Step 3: Cross multiply
    424,486,839.94x = 636,860,206.59 × 217,371,895.72
  4. Step 4: Simplify right side
    424,486,839.94x = 138,435,510,415,099,136
  5. Step 5: Solve for x
    x = 138,435,510,415,099,136/424,486,839.94
  6. Step 6: Final answer
    x = 326,124,386.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.