Home / 860,422.69-1,187,384.29-478,441.27

Finding the Fourth Proportional to 860,422.69, 1,187,384.29 and 478,441.27

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Solution

The fourth proportional to 860,422.69, 1,187,384.29 and 478,441.27 is: 660,249.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,422.69 : 1,187,384.29 = 478,441.27 : x
  2. Step 2: Convert to fraction form
    860,422.69/1,187,384.29 = 478,441.27/x
  3. Step 3: Cross multiply
    860,422.69x = 1,187,384.29 × 478,441.27
  4. Step 4: Simplify right side
    860,422.69x = 568,093,643,985.97
  5. Step 5: Solve for x
    x = 568,093,643,985.97/860,422.69
  6. Step 6: Final answer
    x = 660,249.50

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Double scale
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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.