Home / 860,437.39-1,187,404.59-478,455.97

Finding the Fourth Proportional to 860,437.39, 1,187,404.59 and 478,455.97

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Solution

The fourth proportional to 860,437.39, 1,187,404.59 and 478,455.97 is: 660,269.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,437.39 : 1,187,404.59 = 478,455.97 : x
  2. Step 2: Convert to fraction form
    860,437.39/1,187,404.59 = 478,455.97/x
  3. Step 3: Cross multiply
    860,437.39x = 1,187,404.59 × 478,455.97
  4. Step 4: Simplify right side
    860,437.39x = 568,120,814,890.90
  5. Step 5: Solve for x
    x = 568,120,814,890.90/860,437.39
  6. Step 6: Final answer
    x = 660,269.79

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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.