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Finding the Fourth Proportional to 609,897,632.40, 841,656,452.40 and 345,629,980.80

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Solution

The fourth proportional to 609,897,632.40, 841,656,452.40 and 345,629,980.80 is: 476,968,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,897,632.40 : 841,656,452.40 = 345,629,980.80 : x
  2. Step 2: Convert to fraction form
    609,897,632.40/841,656,452.40 = 345,629,980.80/x
  3. Step 3: Cross multiply
    609,897,632.40x = 841,656,452.40 × 345,629,980.80
  4. Step 4: Simplify right side
    609,897,632.40x = 290,901,703,483,208,128
  5. Step 5: Solve for x
    x = 290,901,703,483,208,128/609,897,632.40
  6. Step 6: Final answer
    x = 476,968,081.25

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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.