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Finding the Fourth Proportional to 1,227,328,923.51, 1,693,713,849.67 and 662,813,750.80

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Solution

The fourth proportional to 1,227,328,923.51, 1,693,713,849.67 and 662,813,750.80 is: 914,682,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227,328,923.51 : 1,693,713,849.67 = 662,813,750.80 : x
  2. Step 2: Convert to fraction form
    1,227,328,923.51/1,693,713,849.67 = 662,813,750.80/x
  3. Step 3: Cross multiply
    1,227,328,923.51x = 1,693,713,849.67 × 662,813,750.80
  4. Step 4: Simplify right side
    1,227,328,923.51x = 1,122,616,829,478,365,824
  5. Step 5: Solve for x
    x = 1,122,616,829,478,365,824/1,227,328,923.51
  6. Step 6: Final answer
    x = 914,682,941.12

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Double scale
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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.