Home / 990,825,835.60-1,486,238,753.40-408,260,211.40

Finding the Fourth Proportional to 990,825,835.60, 1,486,238,753.40 and 408,260,211.40

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Solution

The fourth proportional to 990,825,835.60, 1,486,238,753.40 and 408,260,211.40 is: 612,390,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,825,835.60 : 1,486,238,753.40 = 408,260,211.40 : x
  2. Step 2: Convert to fraction form
    990,825,835.60/1,486,238,753.40 = 408,260,211.40/x
  3. Step 3: Cross multiply
    990,825,835.60x = 1,486,238,753.40 × 408,260,211.40
  4. Step 4: Simplify right side
    990,825,835.60x = 606,772,147,653,956,480
  5. Step 5: Solve for x
    x = 606,772,147,653,956,480/990,825,835.60
  6. Step 6: Final answer
    x = 612,390,317.10

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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.