Home / 990,767,342.60-1,486,151,013.90-664,249,992.20

Finding the Fourth Proportional to 990,767,342.60, 1,486,151,013.90 and 664,249,992.20

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Solution

The fourth proportional to 990,767,342.60, 1,486,151,013.90 and 664,249,992.20 is: 996,374,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,767,342.60 : 1,486,151,013.90 = 664,249,992.20 : x
  2. Step 2: Convert to fraction form
    990,767,342.60/1,486,151,013.90 = 664,249,992.20/x
  3. Step 3: Cross multiply
    990,767,342.60x = 1,486,151,013.90 × 664,249,992.20
  4. Step 4: Simplify right side
    990,767,342.60x = 987,175,799,391,097,216
  5. Step 5: Solve for x
    x = 987,175,799,391,097,216/990,767,342.60
  6. Step 6: Final answer
    x = 996,374,988.30

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Double scale
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Similar ratio
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1.5x scale

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.