Home / 839,356.32-1,257,981.06-661,159.56

Finding the Fourth Proportional to 839,356.32, 1,257,981.06 and 661,159.56

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Solution

The fourth proportional to 839,356.32, 1,257,981.06 and 661,159.56 is: 990,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,356.32 : 1,257,981.06 = 661,159.56 : x
  2. Step 2: Convert to fraction form
    839,356.32/1,257,981.06 = 661,159.56/x
  3. Step 3: Cross multiply
    839,356.32x = 1,257,981.06 × 661,159.56
  4. Step 4: Simplify right side
    839,356.32x = 831,726,204,117.93
  5. Step 5: Solve for x
    x = 831,726,204,117.93/839,356.32
  6. Step 6: Final answer
    x = 990,909.56

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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.