Home / 865,205,574.60-1,297,808,378.31-210,152,187.15

Finding the Fourth Proportional to 865,205,574.60, 1,297,808,378.31 and 210,152,187.15

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Solution

The fourth proportional to 865,205,574.60, 1,297,808,378.31 and 210,152,187.15 is: 315,228,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,205,574.60 : 1,297,808,378.31 = 210,152,187.15 : x
  2. Step 2: Convert to fraction form
    865,205,574.60/1,297,808,378.31 = 210,152,187.15/x
  3. Step 3: Cross multiply
    865,205,574.60x = 1,297,808,378.31 × 210,152,187.15
  4. Step 4: Simplify right side
    865,205,574.60x = 272,737,269,203,441,120
  5. Step 5: Solve for x
    x = 272,737,269,203,441,120/865,205,574.60
  6. Step 6: Final answer
    x = 315,228,284.71

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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.