Home / 776,718.95-1,072,203.55-522,217.76

Finding the Fourth Proportional to 776,718.95, 1,072,203.55 and 522,217.76

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Solution

The fourth proportional to 776,718.95, 1,072,203.55 and 522,217.76 is: 720,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,718.95 : 1,072,203.55 = 522,217.76 : x
  2. Step 2: Convert to fraction form
    776,718.95/1,072,203.55 = 522,217.76/x
  3. Step 3: Cross multiply
    776,718.95x = 1,072,203.55 × 522,217.76
  4. Step 4: Simplify right side
    776,718.95x = 559,923,729,478.49
  5. Step 5: Solve for x
    x = 559,923,729,478.49/776,718.95
  6. Step 6: Final answer
    x = 720,883.32

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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.