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Finding the Fourth Proportional to 909,057.80, 1,363,988.34 and 476,672

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Solution

The fourth proportional to 909,057.80, 1,363,988.34 and 476,672 is: 715,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,057.80 : 1,363,988.34 = 476,672 : x
  2. Step 2: Convert to fraction form
    909,057.80/1,363,988.34 = 476,672/x
  3. Step 3: Cross multiply
    909,057.80x = 1,363,988.34 × 476,672
  4. Step 4: Simplify right side
    909,057.80x = 650,175,050,004.48
  5. Step 5: Solve for x
    x = 650,175,050,004.48/909,057.80
  6. Step 6: Final answer
    x = 715,218.60

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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.