Home / 913,309.80-1,260,336.54-505,428.85

Finding the Fourth Proportional to 913,309.80, 1,260,336.54 and 505,428.85

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Solution

The fourth proportional to 913,309.80, 1,260,336.54 and 505,428.85 is: 697,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,309.80 : 1,260,336.54 = 505,428.85 : x
  2. Step 2: Convert to fraction form
    913,309.80/1,260,336.54 = 505,428.85/x
  3. Step 3: Cross multiply
    913,309.80x = 1,260,336.54 × 505,428.85
  4. Step 4: Simplify right side
    913,309.80x = 637,010,448,025.18
  5. Step 5: Solve for x
    x = 637,010,448,025.18/913,309.80
  6. Step 6: Final answer
    x = 697,474.67

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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.