Home / 513,843,123.56-709,104,288.21-278,893,869.08

Finding the Fourth Proportional to 513,843,123.56, 709,104,288.21 and 278,893,869.08

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Solution

The fourth proportional to 513,843,123.56, 709,104,288.21 and 278,893,869.08 is: 384,873,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,843,123.56 : 709,104,288.21 = 278,893,869.08 : x
  2. Step 2: Convert to fraction form
    513,843,123.56/709,104,288.21 = 278,893,869.08/x
  3. Step 3: Cross multiply
    513,843,123.56x = 709,104,288.21 × 278,893,869.08
  4. Step 4: Simplify right side
    513,843,123.56x = 197,764,838,520,106,336
  5. Step 5: Solve for x
    x = 197,764,838,520,106,336/513,843,123.56
  6. Step 6: Final answer
    x = 384,873,961.43

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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.