Home / 1,098,242,278.98-1,515,603,941.56-646,151,803.90

Finding the Fourth Proportional to 1,098,242,278.98, 1,515,603,941.56 and 646,151,803.90

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Solution

The fourth proportional to 1,098,242,278.98, 1,515,603,941.56 and 646,151,803.90 is: 891,706,902.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,242,278.98 : 1,515,603,941.56 = 646,151,803.90 : x
  2. Step 2: Convert to fraction form
    1,098,242,278.98/1,515,603,941.56 = 646,151,803.90/x
  3. Step 3: Cross multiply
    1,098,242,278.98x = 1,515,603,941.56 × 646,151,803.90
  4. Step 4: Simplify right side
    1,098,242,278.98x = 979,310,220,836,944,128
  5. Step 5: Solve for x
    x = 979,310,220,836,944,128/1,098,242,278.98
  6. Step 6: Final answer
    x = 891,706,902.55

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Double scale
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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.