Home / 766,584,886.60-1,149,877,329.90-421,405,136.20

Finding the Fourth Proportional to 766,584,886.60, 1,149,877,329.90 and 421,405,136.20

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Solution

The fourth proportional to 766,584,886.60, 1,149,877,329.90 and 421,405,136.20 is: 632,107,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,584,886.60 : 1,149,877,329.90 = 421,405,136.20 : x
  2. Step 2: Convert to fraction form
    766,584,886.60/1,149,877,329.90 = 421,405,136.20/x
  3. Step 3: Cross multiply
    766,584,886.60x = 1,149,877,329.90 × 421,405,136.20
  4. Step 4: Simplify right side
    766,584,886.60x = 484,564,212,819,801,856
  5. Step 5: Solve for x
    x = 484,564,212,819,801,856/766,584,886.60
  6. Step 6: Final answer
    x = 632,107,704.30

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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.