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Finding the Fourth Proportional to 651,843,608.40, 977,765,412.60 and 345,733,592.40

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Solution

The fourth proportional to 651,843,608.40, 977,765,412.60 and 345,733,592.40 is: 518,600,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,843,608.40 : 977,765,412.60 = 345,733,592.40 : x
  2. Step 2: Convert to fraction form
    651,843,608.40/977,765,412.60 = 345,733,592.40/x
  3. Step 3: Cross multiply
    651,843,608.40x = 977,765,412.60 × 345,733,592.40
  4. Step 4: Simplify right side
    651,843,608.40x = 338,046,348,622,666,240
  5. Step 5: Solve for x
    x = 338,046,348,622,666,240/651,843,608.40
  6. Step 6: Final answer
    x = 518,600,388.60

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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.