Home / 714,318.60-1,069,728.30-339,904.20

Finding the Fourth Proportional to 714,318.60, 1,069,728.30 and 339,904.20

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Solution

The fourth proportional to 714,318.60, 1,069,728.30 and 339,904.20 is: 509,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,318.60 : 1,069,728.30 = 339,904.20 : x
  2. Step 2: Convert to fraction form
    714,318.60/1,069,728.30 = 339,904.20/x
  3. Step 3: Cross multiply
    714,318.60x = 1,069,728.30 × 339,904.20
  4. Step 4: Simplify right side
    714,318.60x = 363,605,142,028.86
  5. Step 5: Solve for x
    x = 363,605,142,028.86/714,318.60
  6. Step 6: Final answer
    x = 509,023.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.