Home / 563,961.78-778,256.64-318,943.26

Finding the Fourth Proportional to 563,961.78, 778,256.64 and 318,943.26

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Solution

The fourth proportional to 563,961.78, 778,256.64 and 318,943.26 is: 440,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,961.78 : 778,256.64 = 318,943.26 : x
  2. Step 2: Convert to fraction form
    563,961.78/778,256.64 = 318,943.26/x
  3. Step 3: Cross multiply
    563,961.78x = 778,256.64 × 318,943.26
  4. Step 4: Simplify right side
    563,961.78x = 248,219,709,878.25
  5. Step 5: Solve for x
    x = 248,219,709,878.25/563,961.78
  6. Step 6: Final answer
    x = 440,135.69

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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.