Home / 1,273,128,946.20-1,909,693,419.30-1,212,863,536.80

Finding the Fourth Proportional to 1,273,128,946.20, 1,909,693,419.30 and 1,212,863,536.80

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Solution

The fourth proportional to 1,273,128,946.20, 1,909,693,419.30 and 1,212,863,536.80 is: 1,819,295,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,128,946.20 : 1,909,693,419.30 = 1,212,863,536.80 : x
  2. Step 2: Convert to fraction form
    1,273,128,946.20/1,909,693,419.30 = 1,212,863,536.80/x
  3. Step 3: Cross multiply
    1,273,128,946.20x = 1,909,693,419.30 × 1,212,863,536.80
  4. Step 4: Simplify right side
    1,273,128,946.20x = 2,316,197,514,735,883,264
  5. Step 5: Solve for x
    x = 2,316,197,514,735,883,264/1,273,128,946.20
  6. Step 6: Final answer
    x = 1,819,295,305.20

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Double scale
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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.