Home / 12,318,470,947.52-18,470,327,364.12-3,920,749,207.28

Finding the Fourth Proportional to 12,318,470,947.52, 18,470,327,364.12 and 3,920,749,207.28

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Solution

The fourth proportional to 12,318,470,947.52, 18,470,327,364.12 and 3,920,749,207.28 is: 5,878,775,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318,470,947.52 : 18,470,327,364.12 = 3,920,749,207.28 : x
  2. Step 2: Convert to fraction form
    12,318,470,947.52/18,470,327,364.12 = 3,920,749,207.28/x
  3. Step 3: Cross multiply
    12,318,470,947.52x = 18,470,327,364.12 × 3,920,749,207.28
  4. Step 4: Simplify right side
    12,318,470,947.52x = 72,417,521,371,075,584,000
  5. Step 5: Solve for x
    x = 72,417,521,371,075,584,000/12,318,470,947.52
  6. Step 6: Final answer
    x = 5,878,775,188.87

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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.