Home / 868,900,110.21-1,199,123,145.90-492,563,991.96

Finding the Fourth Proportional to 868,900,110.21, 1,199,123,145.90 and 492,563,991.96

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Solution

The fourth proportional to 868,900,110.21, 1,199,123,145.90 and 492,563,991.96 is: 679,761,547.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,900,110.21 : 1,199,123,145.90 = 492,563,991.96 : x
  2. Step 2: Convert to fraction form
    868,900,110.21/1,199,123,145.90 = 492,563,991.96/x
  3. Step 3: Cross multiply
    868,900,110.21x = 1,199,123,145.90 × 492,563,991.96
  4. Step 4: Simplify right side
    868,900,110.21x = 590,644,883,596,137,472
  5. Step 5: Solve for x
    x = 590,644,883,596,137,472/868,900,110.21
  6. Step 6: Final answer
    x = 679,761,547.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.