Home / 887,189.80-1,224,320.60-505,216.68

Finding the Fourth Proportional to 887,189.80, 1,224,320.60 and 505,216.68

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Solution

The fourth proportional to 887,189.80, 1,224,320.60 and 505,216.68 is: 697,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,189.80 : 1,224,320.60 = 505,216.68 : x
  2. Step 2: Convert to fraction form
    887,189.80/1,224,320.60 = 505,216.68/x
  3. Step 3: Cross multiply
    887,189.80x = 1,224,320.60 × 505,216.68
  4. Step 4: Simplify right side
    887,189.80x = 618,547,188,787.61
  5. Step 5: Solve for x
    x = 618,547,188,787.61/887,189.80
  6. Step 6: Final answer
    x = 697,198.26

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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.