Home / 651,669,332.70-977,503,999.05-389,775,207.90

Finding the Fourth Proportional to 651,669,332.70, 977,503,999.05 and 389,775,207.90

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Solution

The fourth proportional to 651,669,332.70, 977,503,999.05 and 389,775,207.90 is: 584,662,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,669,332.70 : 977,503,999.05 = 389,775,207.90 : x
  2. Step 2: Convert to fraction form
    651,669,332.70/977,503,999.05 = 389,775,207.90/x
  3. Step 3: Cross multiply
    651,669,332.70x = 977,503,999.05 × 389,775,207.90
  4. Step 4: Simplify right side
    651,669,332.70x = 381,006,824,452,795,136
  5. Step 5: Solve for x
    x = 381,006,824,452,795,136/651,669,332.70
  6. Step 6: Final answer
    x = 584,662,811.85

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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.