Home / 860,434.89-1,187,401.13-478,453.47

Finding the Fourth Proportional to 860,434.89, 1,187,401.13 and 478,453.47

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Solution

The fourth proportional to 860,434.89, 1,187,401.13 and 478,453.47 is: 660,266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,434.89 : 1,187,401.13 = 478,453.47 : x
  2. Step 2: Convert to fraction form
    860,434.89/1,187,401.13 = 478,453.47/x
  3. Step 3: Cross multiply
    860,434.89x = 1,187,401.13 × 478,453.47
  4. Step 4: Simplify right side
    860,434.89x = 568,116,188,538.15
  5. Step 5: Solve for x
    x = 568,116,188,538.15/860,434.89
  6. Step 6: Final answer
    x = 660,266.33

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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.