Home / 887,188.80-1,224,319.20-505,215.72

Finding the Fourth Proportional to 887,188.80, 1,224,319.20 and 505,215.72

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Solution

The fourth proportional to 887,188.80, 1,224,319.20 and 505,215.72 is: 697,196.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,188.80 : 1,224,319.20 = 505,215.72 : x
  2. Step 2: Convert to fraction form
    887,188.80/1,224,319.20 = 505,215.72/x
  3. Step 3: Cross multiply
    887,188.80x = 1,224,319.20 × 505,215.72
  4. Step 4: Simplify right side
    887,188.80x = 618,545,306,137.82
  5. Step 5: Solve for x
    x = 618,545,306,137.82/887,188.80
  6. Step 6: Final answer
    x = 697,196.93

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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.