Home / 872,940,780.01-1,309,989,488.12-479,742,193.41

Finding the Fourth Proportional to 872,940,780.01, 1,309,989,488.12 and 479,742,193.41

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Solution

The fourth proportional to 872,940,780.01, 1,309,989,488.12 and 479,742,193.41 is: 719,931,116.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,940,780.01 : 1,309,989,488.12 = 479,742,193.41 : x
  2. Step 2: Convert to fraction form
    872,940,780.01/1,309,989,488.12 = 479,742,193.41/x
  3. Step 3: Cross multiply
    872,940,780.01x = 1,309,989,488.12 × 479,742,193.41
  4. Step 4: Simplify right side
    872,940,780.01x = 628,457,230,374,731,904
  5. Step 5: Solve for x
    x = 628,457,230,374,731,904/872,940,780.01
  6. Step 6: Final answer
    x = 719,931,116.48

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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.