Home / 910,665.78-1,256,808.06-528,669.78

Finding the Fourth Proportional to 910,665.78, 1,256,808.06 and 528,669.78

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Solution

The fourth proportional to 910,665.78, 1,256,808.06 and 528,669.78 is: 729,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,665.78 : 1,256,808.06 = 528,669.78 : x
  2. Step 2: Convert to fraction form
    910,665.78/1,256,808.06 = 528,669.78/x
  3. Step 3: Cross multiply
    910,665.78x = 1,256,808.06 × 528,669.78
  4. Step 4: Simplify right side
    910,665.78x = 664,436,440,582.43
  5. Step 5: Solve for x
    x = 664,436,440,582.43/910,665.78
  6. Step 6: Final answer
    x = 729,616.13

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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.