Home / 1,147,396,587.90-1,721,094,881.85-371,120,719.20

Finding the Fourth Proportional to 1,147,396,587.90, 1,721,094,881.85 and 371,120,719.20

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Solution

The fourth proportional to 1,147,396,587.90, 1,721,094,881.85 and 371,120,719.20 is: 556,681,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,396,587.90 : 1,721,094,881.85 = 371,120,719.20 : x
  2. Step 2: Convert to fraction form
    1,147,396,587.90/1,721,094,881.85 = 371,120,719.20/x
  3. Step 3: Cross multiply
    1,147,396,587.90x = 1,721,094,881.85 × 371,120,719.20
  4. Step 4: Simplify right side
    1,147,396,587.90x = 638,733,970,363,611,008
  5. Step 5: Solve for x
    x = 638,733,970,363,611,008/1,147,396,587.90
  6. Step 6: Final answer
    x = 556,681,078.80

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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.