Home / 728,161,900.32-1,005,136,687.36-477,282,459.72

Finding the Fourth Proportional to 728,161,900.32, 1,005,136,687.36 and 477,282,459.72

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Solution

The fourth proportional to 728,161,900.32, 1,005,136,687.36 and 477,282,459.72 is: 658,828,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,161,900.32 : 1,005,136,687.36 = 477,282,459.72 : x
  2. Step 2: Convert to fraction form
    728,161,900.32/1,005,136,687.36 = 477,282,459.72/x
  3. Step 3: Cross multiply
    728,161,900.32x = 1,005,136,687.36 × 477,282,459.72
  4. Step 4: Simplify right side
    728,161,900.32x = 479,734,110,497,993,472
  5. Step 5: Solve for x
    x = 479,734,110,497,993,472/728,161,900.32
  6. Step 6: Final answer
    x = 658,828,909.19

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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.