Home / 919,017.43-1,268,237.02-505,545.31

Finding the Fourth Proportional to 919,017.43, 1,268,237.02 and 505,545.31

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Solution

The fourth proportional to 919,017.43, 1,268,237.02 and 505,545.31 is: 697,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,017.43 : 1,268,237.02 = 505,545.31 : x
  2. Step 2: Convert to fraction form
    919,017.43/1,268,237.02 = 505,545.31/x
  3. Step 3: Cross multiply
    919,017.43x = 1,268,237.02 × 505,545.31
  4. Step 4: Simplify right side
    919,017.43x = 641,151,271,564.87
  5. Step 5: Solve for x
    x = 641,151,271,564.87/919,017.43
  6. Step 6: Final answer
    x = 697,648.65

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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.