Home / 688,688.72-950,414.80-382,771.20

Finding the Fourth Proportional to 688,688.72, 950,414.80 and 382,771.20

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Solution

The fourth proportional to 688,688.72, 950,414.80 and 382,771.20 is: 528,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,688.72 : 950,414.80 = 382,771.20 : x
  2. Step 2: Convert to fraction form
    688,688.72/950,414.80 = 382,771.20/x
  3. Step 3: Cross multiply
    688,688.72x = 950,414.80 × 382,771.20
  4. Step 4: Simplify right side
    688,688.72x = 363,791,413,493.76
  5. Step 5: Solve for x
    x = 363,791,413,493.76/688,688.72
  6. Step 6: Final answer
    x = 528,237.80

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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.