Home / 714,245.25-985,670.45-391,985.34

Finding the Fourth Proportional to 714,245.25, 985,670.45 and 391,985.34

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Solution

The fourth proportional to 714,245.25, 985,670.45 and 391,985.34 is: 540,946.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,245.25 : 985,670.45 = 391,985.34 : x
  2. Step 2: Convert to fraction form
    714,245.25/985,670.45 = 391,985.34/x
  3. Step 3: Cross multiply
    714,245.25x = 985,670.45 × 391,985.34
  4. Step 4: Simplify right side
    714,245.25x = 386,368,366,471.20
  5. Step 5: Solve for x
    x = 386,368,366,471.20/714,245.25
  6. Step 6: Final answer
    x = 540,946.36

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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.