Home / 913,870.05-1,261,225.30-505,971.90

Finding the Fourth Proportional to 913,870.05, 1,261,225.30 and 505,971.90

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Solution

The fourth proportional to 913,870.05, 1,261,225.30 and 505,971.90 is: 698,288.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,870.05 : 1,261,225.30 = 505,971.90 : x
  2. Step 2: Convert to fraction form
    913,870.05/1,261,225.30 = 505,971.90/x
  3. Step 3: Cross multiply
    913,870.05x = 1,261,225.30 × 505,971.90
  4. Step 4: Simplify right side
    913,870.05x = 638,144,560,104.14
  5. Step 5: Solve for x
    x = 638,144,560,104.14/913,870.05
  6. Step 6: Final answer
    x = 698,288.07

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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.