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Finding the Fourth Proportional to 611,057.52, 916,032.24 and 330,246.72

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Solution

The fourth proportional to 611,057.52, 916,032.24 and 330,246.72 is: 495,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,057.52 : 916,032.24 = 330,246.72 : x
  2. Step 2: Convert to fraction form
    611,057.52/916,032.24 = 330,246.72/x
  3. Step 3: Cross multiply
    611,057.52x = 916,032.24 × 330,246.72
  4. Step 4: Simplify right side
    611,057.52x = 302,516,642,674.25
  5. Step 5: Solve for x
    x = 302,516,642,674.25/611,057.52
  6. Step 6: Final answer
    x = 495,070.65

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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.