Home / 20,781,421,518.40-31,172,132,277.60-20,781,421,518.40

Finding the Fourth Proportional to 20,781,421,518.40, 31,172,132,277.60 and 20,781,421,518.40

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Solution

The fourth proportional to 20,781,421,518.40, 31,172,132,277.60 and 20,781,421,518.40 is: 31,172,132,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,421,518.40 : 31,172,132,277.60 = 20,781,421,518.40 : x
  2. Step 2: Convert to fraction form
    20,781,421,518.40/31,172,132,277.60 = 20,781,421,518.40/x
  3. Step 3: Cross multiply
    20,781,421,518.40x = 31,172,132,277.60 × 20,781,421,518.40
  4. Step 4: Simplify right side
    20,781,421,518.40x = 647,801,220,488,127,840,256
  5. Step 5: Solve for x
    x = 647,801,220,488,127,840,256/20,781,421,518.40
  6. Step 6: Final answer
    x = 31,172,132,277.60

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1.5x scale

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.