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Finding the Fourth Proportional to 642,373.50, 886,451.90 and 370,452.84

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Solution

The fourth proportional to 642,373.50, 886,451.90 and 370,452.84 is: 511,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,373.50 : 886,451.90 = 370,452.84 : x
  2. Step 2: Convert to fraction form
    642,373.50/886,451.90 = 370,452.84/x
  3. Step 3: Cross multiply
    642,373.50x = 886,451.90 × 370,452.84
  4. Step 4: Simplify right side
    642,373.50x = 328,388,623,878.40
  5. Step 5: Solve for x
    x = 328,388,623,878.40/642,373.50
  6. Step 6: Final answer
    x = 511,211.35

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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.