Home / 431,583,688.26-647,214,820.74-155,159,474.40

Finding the Fourth Proportional to 431,583,688.26, 647,214,820.74 and 155,159,474.40

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Solution

The fourth proportional to 431,583,688.26, 647,214,820.74 and 155,159,474.40 is: 232,681,433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,583,688.26 : 647,214,820.74 = 155,159,474.40 : x
  2. Step 2: Convert to fraction form
    431,583,688.26/647,214,820.74 = 155,159,474.40/x
  3. Step 3: Cross multiply
    431,583,688.26x = 647,214,820.74 × 155,159,474.40
  4. Step 4: Simplify right side
    431,583,688.26x = 100,421,511,409,908,624
  5. Step 5: Solve for x
    x = 100,421,511,409,908,624/431,583,688.26
  6. Step 6: Final answer
    x = 232,681,433.85

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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.