Home / 913,512.60-1,260,632.07-505,605.72

Finding the Fourth Proportional to 913,512.60, 1,260,632.07 and 505,605.72

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Solution

The fourth proportional to 913,512.60, 1,260,632.07 and 505,605.72 is: 697,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,512.60 : 1,260,632.07 = 505,605.72 : x
  2. Step 2: Convert to fraction form
    913,512.60/1,260,632.07 = 505,605.72/x
  3. Step 3: Cross multiply
    913,512.60x = 1,260,632.07 × 505,605.72
  4. Step 4: Simplify right side
    913,512.60x = 637,382,785,407.44
  5. Step 5: Solve for x
    x = 637,382,785,407.44/913,512.60
  6. Step 6: Final answer
    x = 697,727.42

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1.5x scale

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.