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Finding the Fourth Proportional to 660,174.38, 911,045.31 and 358,368.38

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Solution

The fourth proportional to 660,174.38, 911,045.31 and 358,368.38 is: 494,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,174.38 : 911,045.31 = 358,368.38 : x
  2. Step 2: Convert to fraction form
    660,174.38/911,045.31 = 358,368.38/x
  3. Step 3: Cross multiply
    660,174.38x = 911,045.31 × 358,368.38
  4. Step 4: Simplify right side
    660,174.38x = 326,489,831,851.30
  5. Step 5: Solve for x
    x = 326,489,831,851.30/660,174.38
  6. Step 6: Final answer
    x = 494,550.90

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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.