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Finding the Fourth Proportional to 674,242.90, 930,483.50 and 387,763.22

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Solution

The fourth proportional to 674,242.90, 930,483.50 and 387,763.22 is: 535,129.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,242.90 : 930,483.50 = 387,763.22 : x
  2. Step 2: Convert to fraction form
    674,242.90/930,483.50 = 387,763.22/x
  3. Step 3: Cross multiply
    674,242.90x = 930,483.50 × 387,763.22
  4. Step 4: Simplify right side
    674,242.90x = 360,807,278,504.26
  5. Step 5: Solve for x
    x = 360,807,278,504.26/674,242.90
  6. Step 6: Final answer
    x = 535,129.52

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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.