Home / 860,437.53-1,187,404.77-478,456.11

Finding the Fourth Proportional to 860,437.53, 1,187,404.77 and 478,456.11

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Solution

The fourth proportional to 860,437.53, 1,187,404.77 and 478,456.11 is: 660,269.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,437.53 : 1,187,404.77 = 478,456.11 : x
  2. Step 2: Convert to fraction form
    860,437.53/1,187,404.77 = 478,456.11/x
  3. Step 3: Cross multiply
    860,437.53x = 1,187,404.77 × 478,456.11
  4. Step 4: Simplify right side
    860,437.53x = 568,121,067,249.65
  5. Step 5: Solve for x
    x = 568,121,067,249.65/860,437.53
  6. Step 6: Final answer
    x = 660,269.98

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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.