Home / 431,390,269.80-647,085,404.70-293,640,762.60

Finding the Fourth Proportional to 431,390,269.80, 647,085,404.70 and 293,640,762.60

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Solution

The fourth proportional to 431,390,269.80, 647,085,404.70 and 293,640,762.60 is: 440,461,143.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,390,269.80 : 647,085,404.70 = 293,640,762.60 : x
  2. Step 2: Convert to fraction form
    431,390,269.80/647,085,404.70 = 293,640,762.60/x
  3. Step 3: Cross multiply
    431,390,269.80x = 647,085,404.70 × 293,640,762.60
  4. Step 4: Simplify right side
    431,390,269.80x = 190,010,651,703,437,664
  5. Step 5: Solve for x
    x = 190,010,651,703,437,664/431,390,269.80
  6. Step 6: Final answer
    x = 440,461,143.90

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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.