Home / 817,319.16-1,223,616.76-518,137.56

Finding the Fourth Proportional to 817,319.16, 1,223,616.76 and 518,137.56

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Solution

The fourth proportional to 817,319.16, 1,223,616.76 and 518,137.56 is: 775,708.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,319.16 : 1,223,616.76 = 518,137.56 : x
  2. Step 2: Convert to fraction form
    817,319.16/1,223,616.76 = 518,137.56/x
  3. Step 3: Cross multiply
    817,319.16x = 1,223,616.76 × 518,137.56
  4. Step 4: Simplify right side
    817,319.16x = 634,001,802,401.51
  5. Step 5: Solve for x
    x = 634,001,802,401.51/817,319.16
  6. Step 6: Final answer
    x = 775,708.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.