Home / 648,876.80-895,389.72-419,439.44

Finding the Fourth Proportional to 648,876.80, 895,389.72 and 419,439.44

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Solution

The fourth proportional to 648,876.80, 895,389.72 and 419,439.44 is: 578,787.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,876.80 : 895,389.72 = 419,439.44 : x
  2. Step 2: Convert to fraction form
    648,876.80/895,389.72 = 419,439.44/x
  3. Step 3: Cross multiply
    648,876.80x = 895,389.72 × 419,439.44
  4. Step 4: Simplify right side
    648,876.80x = 375,561,762,738.56
  5. Step 5: Solve for x
    x = 375,561,762,738.56/648,876.80
  6. Step 6: Final answer
    x = 578,787.47

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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.