Home / 1,315,314,013.41-1,815,132,710.21-786,677,989.14

Finding the Fourth Proportional to 1,315,314,013.41, 1,815,132,710.21 and 786,677,989.14

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Solution

The fourth proportional to 1,315,314,013.41, 1,815,132,710.21 and 786,677,989.14 is: 1,085,615,249.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,314,013.41 : 1,815,132,710.21 = 786,677,989.14 : x
  2. Step 2: Convert to fraction form
    1,315,314,013.41/1,815,132,710.21 = 786,677,989.14/x
  3. Step 3: Cross multiply
    1,315,314,013.41x = 1,815,132,710.21 × 786,677,989.14
  4. Step 4: Simplify right side
    1,315,314,013.41x = 1,427,924,950,486,307,584
  5. Step 5: Solve for x
    x = 1,427,924,950,486,307,584/1,315,314,013.41
  6. Step 6: Final answer
    x = 1,085,615,249.23

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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.