Home / 612,631.68-845,432.20-340,693.64

Finding the Fourth Proportional to 612,631.68, 845,432.20 and 340,693.64

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Solution

The fourth proportional to 612,631.68, 845,432.20 and 340,693.64 is: 470,157.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,631.68 : 845,432.20 = 340,693.64 : x
  2. Step 2: Convert to fraction form
    612,631.68/845,432.20 = 340,693.64/x
  3. Step 3: Cross multiply
    612,631.68x = 845,432.20 × 340,693.64
  4. Step 4: Simplify right side
    612,631.68x = 288,033,373,591.21
  5. Step 5: Solve for x
    x = 288,033,373,591.21/612,631.68
  6. Step 6: Final answer
    x = 470,157.49

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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.