Home / 663,600.21-990,555.78-569,435.51

Finding the Fourth Proportional to 663,600.21, 990,555.78 and 569,435.51

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Solution

The fourth proportional to 663,600.21, 990,555.78 and 569,435.51 is: 849,996.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,600.21 : 990,555.78 = 569,435.51 : x
  2. Step 2: Convert to fraction form
    663,600.21/990,555.78 = 569,435.51/x
  3. Step 3: Cross multiply
    663,600.21x = 990,555.78 × 569,435.51
  4. Step 4: Simplify right side
    663,600.21x = 564,057,635,767.75
  5. Step 5: Solve for x
    x = 564,057,635,767.75/663,600.21
  6. Step 6: Final answer
    x = 849,996.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.