Home / 916,521.80-1,373,616.30-816,211.40

Finding the Fourth Proportional to 916,521.80, 1,373,616.30 and 816,211.40

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Solution

The fourth proportional to 916,521.80, 1,373,616.30 and 816,211.40 is: 1,223,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,521.80 : 1,373,616.30 = 816,211.40 : x
  2. Step 2: Convert to fraction form
    916,521.80/1,373,616.30 = 816,211.40/x
  3. Step 3: Cross multiply
    916,521.80x = 1,373,616.30 × 816,211.40
  4. Step 4: Simplify right side
    916,521.80x = 1,121,161,283,285.82
  5. Step 5: Solve for x
    x = 1,121,161,283,285.82/916,521.80
  6. Step 6: Final answer
    x = 1,223,278.36

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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.