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Finding the Fourth Proportional to 689,987.64, 952,182.84 and 384,057.42

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Solution

The fourth proportional to 689,987.64, 952,182.84 and 384,057.42 is: 529,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,987.64 : 952,182.84 = 384,057.42 : x
  2. Step 2: Convert to fraction form
    689,987.64/952,182.84 = 384,057.42/x
  3. Step 3: Cross multiply
    689,987.64x = 952,182.84 × 384,057.42
  4. Step 4: Simplify right side
    689,987.64x = 365,692,884,898.67
  5. Step 5: Solve for x
    x = 365,692,884,898.67/689,987.64
  6. Step 6: Final answer
    x = 529,999.18

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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.