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Finding the Fourth Proportional to 660,042, 910,860.39 and 358,236

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Solution

The fourth proportional to 660,042, 910,860.39 and 358,236 is: 494,367.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,042 : 910,860.39 = 358,236 : x
  2. Step 2: Convert to fraction form
    660,042/910,860.39 = 358,236/x
  3. Step 3: Cross multiply
    660,042x = 910,860.39 × 358,236
  4. Step 4: Simplify right side
    660,042x = 326,302,982,672.04
  5. Step 5: Solve for x
    x = 326,302,982,672.04/660,042
  6. Step 6: Final answer
    x = 494,367.00

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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.