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Finding the Fourth Proportional to 776,585.12, 1,072,018.12 and 522,083.92

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Solution

The fourth proportional to 776,585.12, 1,072,018.12 and 522,083.92 is: 720,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,585.12 : 1,072,018.12 = 522,083.92 : x
  2. Step 2: Convert to fraction form
    776,585.12/1,072,018.12 = 522,083.92/x
  3. Step 3: Cross multiply
    776,585.12x = 1,072,018.12 × 522,083.92
  4. Step 4: Simplify right side
    776,585.12x = 559,683,422,400.63
  5. Step 5: Solve for x
    x = 559,683,422,400.63/776,585.12
  6. Step 6: Final answer
    x = 720,698.10

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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.