Home / 913,318.07-1,260,366.48-505,395.06

Finding the Fourth Proportional to 913,318.07, 1,260,366.48 and 505,395.06

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Solution

The fourth proportional to 913,318.07, 1,260,366.48 and 505,395.06 is: 697,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,318.07 : 1,260,366.48 = 505,395.06 : x
  2. Step 2: Convert to fraction form
    913,318.07/1,260,366.48 = 505,395.06/x
  3. Step 3: Cross multiply
    913,318.07x = 1,260,366.48 × 505,395.06
  4. Step 4: Simplify right side
    913,318.07x = 636,982,990,886.36
  5. Step 5: Solve for x
    x = 636,982,990,886.36/913,318.07
  6. Step 6: Final answer
    x = 697,438.29

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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.