Home / 860,313.96-1,187,230.50-478,340.64

Finding the Fourth Proportional to 860,313.96, 1,187,230.50 and 478,340.64

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Solution

The fourth proportional to 860,313.96, 1,187,230.50 and 478,340.64 is: 660,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,313.96 : 1,187,230.50 = 478,340.64 : x
  2. Step 2: Convert to fraction form
    860,313.96/1,187,230.50 = 478,340.64/x
  3. Step 3: Cross multiply
    860,313.96x = 1,187,230.50 × 478,340.64
  4. Step 4: Simplify right side
    860,313.96x = 567,900,597,197.52
  5. Step 5: Solve for x
    x = 567,900,597,197.52/860,313.96
  6. Step 6: Final answer
    x = 660,108.55

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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.