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Finding the Fourth Proportional to 1,555,375,652, 2,145,407,034 and 997,575,178.40

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Solution

The fourth proportional to 1,555,375,652, 2,145,407,034 and 997,575,178.40 is: 1,376,005,084.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,375,652 : 2,145,407,034 = 997,575,178.40 : x
  2. Step 2: Convert to fraction form
    1,555,375,652/2,145,407,034 = 997,575,178.40/x
  3. Step 3: Cross multiply
    1,555,375,652x = 2,145,407,034 × 997,575,178.40
  4. Step 4: Simplify right side
    1,555,375,652x = 2,140,204,804,683,164,928
  5. Step 5: Solve for x
    x = 2,140,204,804,683,164,928/1,555,375,652
  6. Step 6: Final answer
    x = 1,376,005,084.00

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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.