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Finding the Fourth Proportional to 621,477.72, 932,217.12 and 266,261.40

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Solution

The fourth proportional to 621,477.72, 932,217.12 and 266,261.40 is: 399,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,477.72 : 932,217.12 = 266,261.40 : x
  2. Step 2: Convert to fraction form
    621,477.72/932,217.12 = 266,261.40/x
  3. Step 3: Cross multiply
    621,477.72x = 932,217.12 × 266,261.40
  4. Step 4: Simplify right side
    621,477.72x = 248,213,435,475.17
  5. Step 5: Solve for x
    x = 248,213,435,475.17/621,477.72
  6. Step 6: Final answer
    x = 399,392.33

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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.