Home / 513,228,420.40-769,872,121.80-149,778,871.60

Finding the Fourth Proportional to 513,228,420.40, 769,872,121.80 and 149,778,871.60

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Solution

The fourth proportional to 513,228,420.40, 769,872,121.80 and 149,778,871.60 is: 224,676,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,228,420.40 : 769,872,121.80 = 149,778,871.60 : x
  2. Step 2: Convert to fraction form
    513,228,420.40/769,872,121.80 = 149,778,871.60/x
  3. Step 3: Cross multiply
    513,228,420.40x = 769,872,121.80 × 149,778,871.60
  4. Step 4: Simplify right side
    513,228,420.40x = 115,310,577,679,501,744
  5. Step 5: Solve for x
    x = 115,310,577,679,501,744/513,228,420.40
  6. Step 6: Final answer
    x = 224,676,914.01

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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.