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Finding the Fourth Proportional to 521,019.51, 780,124.05 and 340,657.62

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Solution

The fourth proportional to 521,019.51, 780,124.05 and 340,657.62 is: 510,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,019.51 : 780,124.05 = 340,657.62 : x
  2. Step 2: Convert to fraction form
    521,019.51/780,124.05 = 340,657.62/x
  3. Step 3: Cross multiply
    521,019.51x = 780,124.05 × 340,657.62
  4. Step 4: Simplify right side
    521,019.51x = 265,755,202,177.76
  5. Step 5: Solve for x
    x = 265,755,202,177.76/521,019.51
  6. Step 6: Final answer
    x = 510,067.66

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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.