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Finding the Fourth Proportional to 677,462.60, 934,831.04 and 391,074.96

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Solution

The fourth proportional to 677,462.60, 934,831.04 and 391,074.96 is: 539,644.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,462.60 : 934,831.04 = 391,074.96 : x
  2. Step 2: Convert to fraction form
    677,462.60/934,831.04 = 391,074.96/x
  3. Step 3: Cross multiply
    677,462.60x = 934,831.04 × 391,074.96
  4. Step 4: Simplify right side
    677,462.60x = 365,589,011,574.76
  5. Step 5: Solve for x
    x = 365,589,011,574.76/677,462.60
  6. Step 6: Final answer
    x = 539,644.57

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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.