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Finding the Fourth Proportional to 702,606,508.83, 969,602,758.83 and 389,345,954.18

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Solution

The fourth proportional to 702,606,508.83, 969,602,758.83 and 389,345,954.18 is: 537,300,617.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,606,508.83 : 969,602,758.83 = 389,345,954.18 : x
  2. Step 2: Convert to fraction form
    702,606,508.83/969,602,758.83 = 389,345,954.18/x
  3. Step 3: Cross multiply
    702,606,508.83x = 969,602,758.83 × 389,345,954.18
  4. Step 4: Simplify right side
    702,606,508.83x = 377,510,911,307,378,816
  5. Step 5: Solve for x
    x = 377,510,911,307,378,816/702,606,508.83
  6. Step 6: Final answer
    x = 537,300,617.86

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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.