Home / 678,363.08-1,017,776.88-425,338.11

Finding the Fourth Proportional to 678,363.08, 1,017,776.88 and 425,338.11

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Solution

The fourth proportional to 678,363.08, 1,017,776.88 and 425,338.11 is: 638,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,363.08 : 1,017,776.88 = 425,338.11 : x
  2. Step 2: Convert to fraction form
    678,363.08/1,017,776.88 = 425,338.11/x
  3. Step 3: Cross multiply
    678,363.08x = 1,017,776.88 × 425,338.11
  4. Step 4: Simplify right side
    678,363.08x = 432,899,294,540.90
  5. Step 5: Solve for x
    x = 432,899,294,540.90/678,363.08
  6. Step 6: Final answer
    x = 638,152.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.