Home / 990,767,342.10-1,486,151,013.15-664,249,991.70

Finding the Fourth Proportional to 990,767,342.10, 1,486,151,013.15 and 664,249,991.70

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Solution

The fourth proportional to 990,767,342.10, 1,486,151,013.15 and 664,249,991.70 is: 996,374,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,767,342.10 : 1,486,151,013.15 = 664,249,991.70 : x
  2. Step 2: Convert to fraction form
    990,767,342.10/1,486,151,013.15 = 664,249,991.70/x
  3. Step 3: Cross multiply
    990,767,342.10x = 1,486,151,013.15 × 664,249,991.70
  4. Step 4: Simplify right side
    990,767,342.10x = 987,175,798,149,834,240
  5. Step 5: Solve for x
    x = 987,175,798,149,834,240/990,767,342.10
  6. Step 6: Final answer
    x = 996,374,987.55

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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.