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Finding the Fourth Proportional to 573,919.80, 860,879.70 and 485,346.30

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Solution

The fourth proportional to 573,919.80, 860,879.70 and 485,346.30 is: 728,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,919.80 : 860,879.70 = 485,346.30 : x
  2. Step 2: Convert to fraction form
    573,919.80/860,879.70 = 485,346.30/x
  3. Step 3: Cross multiply
    573,919.80x = 860,879.70 × 485,346.30
  4. Step 4: Simplify right side
    573,919.80x = 417,824,777,140.11
  5. Step 5: Solve for x
    x = 417,824,777,140.11/573,919.80
  6. Step 6: Final answer
    x = 728,019.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.