Home / 838,561,806.40-1,257,842,709.60-256,294,926.40

Finding the Fourth Proportional to 838,561,806.40, 1,257,842,709.60 and 256,294,926.40

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Solution

The fourth proportional to 838,561,806.40, 1,257,842,709.60 and 256,294,926.40 is: 384,442,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,561,806.40 : 1,257,842,709.60 = 256,294,926.40 : x
  2. Step 2: Convert to fraction form
    838,561,806.40/1,257,842,709.60 = 256,294,926.40/x
  3. Step 3: Cross multiply
    838,561,806.40x = 1,257,842,709.60 × 256,294,926.40
  4. Step 4: Simplify right side
    838,561,806.40x = 322,378,704,679,708,544
  5. Step 5: Solve for x
    x = 322,378,704,679,708,544/838,561,806.40
  6. Step 6: Final answer
    x = 384,442,389.60

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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.