Home / 728,161,890.36-1,005,136,673.61-477,282,449.76

Finding the Fourth Proportional to 728,161,890.36, 1,005,136,673.61 and 477,282,449.76

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Solution

The fourth proportional to 728,161,890.36, 1,005,136,673.61 and 477,282,449.76 is: 658,828,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,161,890.36 : 1,005,136,673.61 = 477,282,449.76 : x
  2. Step 2: Convert to fraction form
    728,161,890.36/1,005,136,673.61 = 477,282,449.76/x
  3. Step 3: Cross multiply
    728,161,890.36x = 1,005,136,673.61 × 477,282,449.76
  4. Step 4: Simplify right side
    728,161,890.36x = 479,734,093,922,195,072
  5. Step 5: Solve for x
    x = 479,734,093,922,195,072/728,161,890.36
  6. Step 6: Final answer
    x = 658,828,895.44

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1.5x scale

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.