Home / 860,420.32-1,187,371.20-478,443.04

Finding the Fourth Proportional to 860,420.32, 1,187,371.20 and 478,443.04

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Solution

The fourth proportional to 860,420.32, 1,187,371.20 and 478,443.04 is: 660,246.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,420.32 : 1,187,371.20 = 478,443.04 : x
  2. Step 2: Convert to fraction form
    860,420.32/1,187,371.20 = 478,443.04/x
  3. Step 3: Cross multiply
    860,420.32x = 1,187,371.20 × 478,443.04
  4. Step 4: Simplify right side
    860,420.32x = 568,089,486,536.45
  5. Step 5: Solve for x
    x = 568,089,486,536.45/860,420.32
  6. Step 6: Final answer
    x = 660,246.48

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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.