Home / 913,513.60-1,260,633.45-505,606.72

Finding the Fourth Proportional to 913,513.60, 1,260,633.45 and 505,606.72

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Solution

The fourth proportional to 913,513.60, 1,260,633.45 and 505,606.72 is: 697,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,513.60 : 1,260,633.45 = 505,606.72 : x
  2. Step 2: Convert to fraction form
    913,513.60/1,260,633.45 = 505,606.72/x
  3. Step 3: Cross multiply
    913,513.60x = 1,260,633.45 × 505,606.72
  4. Step 4: Simplify right side
    913,513.60x = 637,384,743,776.78
  5. Step 5: Solve for x
    x = 637,384,743,776.78/913,513.60
  6. Step 6: Final answer
    x = 697,728.80

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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.