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Finding the Fourth Proportional to 612,632.68, 845,433.58 and 340,694.64

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Solution

The fourth proportional to 612,632.68, 845,433.58 and 340,694.64 is: 470,158.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,632.68 : 845,433.58 = 340,694.64 : x
  2. Step 2: Convert to fraction form
    612,632.68/845,433.58 = 340,694.64/x
  3. Step 3: Cross multiply
    612,632.68x = 845,433.58 × 340,694.64
  4. Step 4: Simplify right side
    612,632.68x = 288,034,689,182.01
  5. Step 5: Solve for x
    x = 288,034,689,182.01/612,632.68
  6. Step 6: Final answer
    x = 470,158.87

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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.