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Finding the Fourth Proportional to 507,935.12, 700,912.64 and 278,455.68

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Solution

The fourth proportional to 507,935.12, 700,912.64 and 278,455.68 is: 384,248.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,935.12 : 700,912.64 = 278,455.68 : x
  2. Step 2: Convert to fraction form
    507,935.12/700,912.64 = 278,455.68/x
  3. Step 3: Cross multiply
    507,935.12x = 700,912.64 × 278,455.68
  4. Step 4: Simplify right side
    507,935.12x = 195,173,105,791.80
  5. Step 5: Solve for x
    x = 195,173,105,791.80/507,935.12
  6. Step 6: Final answer
    x = 384,248.10

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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.