Home / 1,296,510,171.48-1,788,514,504.38-878,679,564.12

Finding the Fourth Proportional to 1,296,510,171.48, 1,788,514,504.38 and 878,679,564.12

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Solution

The fourth proportional to 1,296,510,171.48, 1,788,514,504.38 and 878,679,564.12 is: 1,212,124,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,510,171.48 : 1,788,514,504.38 = 878,679,564.12 : x
  2. Step 2: Convert to fraction form
    1,296,510,171.48/1,788,514,504.38 = 878,679,564.12/x
  3. Step 3: Cross multiply
    1,296,510,171.48x = 1,788,514,504.38 × 878,679,564.12
  4. Step 4: Simplify right side
    1,296,510,171.48x = 1,571,531,145,130,916,352
  5. Step 5: Solve for x
    x = 1,571,531,145,130,916,352/1,296,510,171.48
  6. Step 6: Final answer
    x = 1,212,124,038.59

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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.