Home / 766,585,065.10-1,149,877,597.65-421,405,314.70

Finding the Fourth Proportional to 766,585,065.10, 1,149,877,597.65 and 421,405,314.70

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Solution

The fourth proportional to 766,585,065.10, 1,149,877,597.65 and 421,405,314.70 is: 632,107,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,585,065.10 : 1,149,877,597.65 = 421,405,314.70 : x
  2. Step 2: Convert to fraction form
    766,585,065.10/1,149,877,597.65 = 421,405,314.70/x
  3. Step 3: Cross multiply
    766,585,065.10x = 1,149,877,597.65 × 421,405,314.70
  4. Step 4: Simplify right side
    766,585,065.10x = 484,564,530,904,178,240
  5. Step 5: Solve for x
    x = 484,564,530,904,178,240/766,585,065.10
  6. Step 6: Final answer
    x = 632,107,972.05

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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.