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Finding the Fourth Proportional to 911,805.40, 1,366,871.82 and 350,417.08

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Solution

The fourth proportional to 911,805.40, 1,366,871.82 and 350,417.08 is: 525,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,805.40 : 1,366,871.82 = 350,417.08 : x
  2. Step 2: Convert to fraction form
    911,805.40/1,366,871.82 = 350,417.08/x
  3. Step 3: Cross multiply
    911,805.40x = 1,366,871.82 × 350,417.08
  4. Step 4: Simplify right side
    911,805.40x = 478,975,231,898.69
  5. Step 5: Solve for x
    x = 478,975,231,898.69/911,805.40
  6. Step 6: Final answer
    x = 525,304.23

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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.