Home / 842,167,801.39-1,162,113,572.17-465,816,289.39

Finding the Fourth Proportional to 842,167,801.39, 1,162,113,572.17 and 465,816,289.39

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Solution

The fourth proportional to 842,167,801.39, 1,162,113,572.17 and 465,816,289.39 is: 642,783,339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,167,801.39 : 1,162,113,572.17 = 465,816,289.39 : x
  2. Step 2: Convert to fraction form
    842,167,801.39/1,162,113,572.17 = 465,816,289.39/x
  3. Step 3: Cross multiply
    842,167,801.39x = 1,162,113,572.17 × 465,816,289.39
  4. Step 4: Simplify right side
    842,167,801.39x = 541,331,432,037,987,392
  5. Step 5: Solve for x
    x = 541,331,432,037,987,392/842,167,801.39
  6. Step 6: Final answer
    x = 642,783,339.79

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Double scale
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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.