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Finding the Fourth Proportional to 445,806.15, 615,451.14 and 343,607.64

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Solution

The fourth proportional to 445,806.15, 615,451.14 and 343,607.64 is: 474,362.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,806.15 : 615,451.14 = 343,607.64 : x
  2. Step 2: Convert to fraction form
    445,806.15/615,451.14 = 343,607.64/x
  3. Step 3: Cross multiply
    445,806.15x = 615,451.14 × 343,607.64
  4. Step 4: Simplify right side
    445,806.15x = 211,473,713,750.71
  5. Step 5: Solve for x
    x = 211,473,713,750.71/445,806.15
  6. Step 6: Final answer
    x = 474,362.49

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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.