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Finding the Fourth Proportional to 519,722.51, 717,015.78 and 304,784.15

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Solution

The fourth proportional to 519,722.51, 717,015.78 and 304,784.15 is: 420,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,722.51 : 717,015.78 = 304,784.15 : x
  2. Step 2: Convert to fraction form
    519,722.51/717,015.78 = 304,784.15/x
  3. Step 3: Cross multiply
    519,722.51x = 717,015.78 × 304,784.15
  4. Step 4: Simplify right side
    519,722.51x = 218,535,041,458.81
  5. Step 5: Solve for x
    x = 218,535,041,458.81/519,722.51
  6. Step 6: Final answer
    x = 420,484.08

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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.