Home / 865,204,702.94-1,297,807,069.40-210,151,315.20

Finding the Fourth Proportional to 865,204,702.94, 1,297,807,069.40 and 210,151,315.20

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Solution

The fourth proportional to 865,204,702.94, 1,297,807,069.40 and 210,151,315.20 is: 315,226,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,204,702.94 : 1,297,807,069.40 = 210,151,315.20 : x
  2. Step 2: Convert to fraction form
    865,204,702.94/1,297,807,069.40 = 210,151,315.20/x
  3. Step 3: Cross multiply
    865,204,702.94x = 1,297,807,069.40 × 210,151,315.20
  4. Step 4: Simplify right side
    865,204,702.94x = 272,735,862,510,267,680
  5. Step 5: Solve for x
    x = 272,735,862,510,267,680/865,204,702.94
  6. Step 6: Final answer
    x = 315,226,976.44

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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.