Home / 280,600,848,009.20-420,901,272,013.80-71,221,597,065.20

Finding the Fourth Proportional to 280,600,848,009.20, 420,901,272,013.80 and 71,221,597,065.20

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Solution

The fourth proportional to 280,600,848,009.20, 420,901,272,013.80 and 71,221,597,065.20 is: 106,832,395,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600,848,009.20 : 420,901,272,013.80 = 71,221,597,065.20 : x
  2. Step 2: Convert to fraction form
    280,600,848,009.20/420,901,272,013.80 = 71,221,597,065.20/x
  3. Step 3: Cross multiply
    280,600,848,009.20x = 420,901,272,013.80 × 71,221,597,065.20
  4. Step 4: Simplify right side
    280,600,848,009.20x = 29,977,260,799,597,003,931,648
  5. Step 5: Solve for x
    x = 29,977,260,799,597,003,931,648/280,600,848,009.20
  6. Step 6: Final answer
    x = 106,832,395,597.80

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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.