Home / 789,939,288.72-1,089,702,925.17-488,428,218.63

Finding the Fourth Proportional to 789,939,288.72, 1,089,702,925.17 and 488,428,218.63

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Solution

The fourth proportional to 789,939,288.72, 1,089,702,925.17 and 488,428,218.63 is: 673,775,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,939,288.72 : 1,089,702,925.17 = 488,428,218.63 : x
  2. Step 2: Convert to fraction form
    789,939,288.72/1,089,702,925.17 = 488,428,218.63/x
  3. Step 3: Cross multiply
    789,939,288.72x = 1,089,702,925.17 × 488,428,218.63
  4. Step 4: Simplify right side
    789,939,288.72x = 532,241,658,576,683,328
  5. Step 5: Solve for x
    x = 532,241,658,576,683,328/789,939,288.72
  6. Step 6: Final answer
    x = 673,775,397.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.