Home / 1,261,156.80-1,891,007.04-862,280.64

Finding the Fourth Proportional to 1,261,156.80, 1,891,007.04 and 862,280.64

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Solution

The fourth proportional to 1,261,156.80, 1,891,007.04 and 862,280.64 is: 1,292,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,156.80 : 1,891,007.04 = 862,280.64 : x
  2. Step 2: Convert to fraction form
    1,261,156.80/1,891,007.04 = 862,280.64/x
  3. Step 3: Cross multiply
    1,261,156.80x = 1,891,007.04 × 862,280.64
  4. Step 4: Simplify right side
    1,261,156.80x = 1,630,578,760,695.71
  5. Step 5: Solve for x
    x = 1,630,578,760,695.71/1,261,156.80
  6. Step 6: Final answer
    x = 1,292,923.10

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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.