Home / 872,942,840.76-1,309,992,586.16-479,744,259.42

Finding the Fourth Proportional to 872,942,840.76, 1,309,992,586.16 and 479,744,259.42

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Solution

The fourth proportional to 872,942,840.76, 1,309,992,586.16 and 479,744,259.42 is: 719,934,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,942,840.76 : 1,309,992,586.16 = 479,744,259.42 : x
  2. Step 2: Convert to fraction form
    872,942,840.76/1,309,992,586.16 = 479,744,259.42/x
  3. Step 3: Cross multiply
    872,942,840.76x = 1,309,992,586.16 × 479,744,259.42
  4. Step 4: Simplify right side
    872,942,840.76x = 628,461,423,090,621,056
  5. Step 5: Solve for x
    x = 628,461,423,090,621,056/872,942,840.76
  6. Step 6: Final answer
    x = 719,934,219.91

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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.