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Finding the Fourth Proportional to 620,873,302.60, 931,309,953.90 and 528,544,286.20

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Solution

The fourth proportional to 620,873,302.60, 931,309,953.90 and 528,544,286.20 is: 792,816,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,873,302.60 : 931,309,953.90 = 528,544,286.20 : x
  2. Step 2: Convert to fraction form
    620,873,302.60/931,309,953.90 = 528,544,286.20/x
  3. Step 3: Cross multiply
    620,873,302.60x = 931,309,953.90 × 528,544,286.20
  4. Step 4: Simplify right side
    620,873,302.60x = 492,238,554,815,030,400
  5. Step 5: Solve for x
    x = 492,238,554,815,030,400/620,873,302.60
  6. Step 6: Final answer
    x = 792,816,429.30

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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.