Home / 913,318.32-1,260,366.82-505,395.31

Finding the Fourth Proportional to 913,318.32, 1,260,366.82 and 505,395.31

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Solution

The fourth proportional to 913,318.32, 1,260,366.82 and 505,395.31 is: 697,438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,318.32 : 1,260,366.82 = 505,395.31 : x
  2. Step 2: Convert to fraction form
    913,318.32/1,260,366.82 = 505,395.31/x
  3. Step 3: Cross multiply
    913,318.32x = 1,260,366.82 × 505,395.31
  4. Step 4: Simplify right side
    913,318.32x = 636,983,479,707.61
  5. Step 5: Solve for x
    x = 636,983,479,707.61/913,318.32
  6. Step 6: Final answer
    x = 697,438.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.