Home / 1,273,127,909.70-1,909,691,864.55-1,212,862,500.30

Finding the Fourth Proportional to 1,273,127,909.70, 1,909,691,864.55 and 1,212,862,500.30

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Solution

The fourth proportional to 1,273,127,909.70, 1,909,691,864.55 and 1,212,862,500.30 is: 1,819,293,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,127,909.70 : 1,909,691,864.55 = 1,212,862,500.30 : x
  2. Step 2: Convert to fraction form
    1,273,127,909.70/1,909,691,864.55 = 1,212,862,500.30/x
  3. Step 3: Cross multiply
    1,273,127,909.70x = 1,909,691,864.55 × 1,212,862,500.30
  4. Step 4: Simplify right side
    1,273,127,909.70x = 2,316,193,649,640,681,984
  5. Step 5: Solve for x
    x = 2,316,193,649,640,681,984/1,273,127,909.70
  6. Step 6: Final answer
    x = 1,819,293,750.45

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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.