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Finding the Fourth Proportional to 620,656,755.60, 930,854,496.60 and 313,660,275.60

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Solution

The fourth proportional to 620,656,755.60, 930,854,496.60 and 313,660,275.60 is: 470,424,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,656,755.60 : 930,854,496.60 = 313,660,275.60 : x
  2. Step 2: Convert to fraction form
    620,656,755.60/930,854,496.60 = 313,660,275.60/x
  3. Step 3: Cross multiply
    620,656,755.60x = 930,854,496.60 × 313,660,275.60
  4. Step 4: Simplify right side
    620,656,755.60x = 291,972,077,947,055,296
  5. Step 5: Solve for x
    x = 291,972,077,947,055,296/620,656,755.60
  6. Step 6: Final answer
    x = 470,424,393.70

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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.