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Finding the Fourth Proportional to 695,662.02, 960,090.98 and 389,788.20

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Solution

The fourth proportional to 695,662.02, 960,090.98 and 389,788.20 is: 537,951.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,662.02 : 960,090.98 = 389,788.20 : x
  2. Step 2: Convert to fraction form
    695,662.02/960,090.98 = 389,788.20/x
  3. Step 3: Cross multiply
    695,662.02x = 960,090.98 × 389,788.20
  4. Step 4: Simplify right side
    695,662.02x = 374,232,132,981.50
  5. Step 5: Solve for x
    x = 374,232,132,981.50/695,662.02
  6. Step 6: Final answer
    x = 537,951.08

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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.