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Finding the Fourth Proportional to 672,918.28, 928,938.21 and 414,841.35

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Solution

The fourth proportional to 672,918.28, 928,938.21 and 414,841.35 is: 572,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,918.28 : 928,938.21 = 414,841.35 : x
  2. Step 2: Convert to fraction form
    672,918.28/928,938.21 = 414,841.35/x
  3. Step 3: Cross multiply
    672,918.28x = 928,938.21 × 414,841.35
  4. Step 4: Simplify right side
    672,918.28x = 385,361,977,805.57
  5. Step 5: Solve for x
    x = 385,361,977,805.57/672,918.28
  6. Step 6: Final answer
    x = 572,672.77

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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.