Home / 1,019,642.72-1,528,569.84-388,136.48

Finding the Fourth Proportional to 1,019,642.72, 1,528,569.84 and 388,136.48

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Solution

The fourth proportional to 1,019,642.72, 1,528,569.84 and 388,136.48 is: 581,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,642.72 : 1,528,569.84 = 388,136.48 : x
  2. Step 2: Convert to fraction form
    1,019,642.72/1,528,569.84 = 388,136.48/x
  3. Step 3: Cross multiply
    1,019,642.72x = 1,528,569.84 × 388,136.48
  4. Step 4: Simplify right side
    1,019,642.72x = 593,293,717,131.76
  5. Step 5: Solve for x
    x = 593,293,717,131.76/1,019,642.72
  6. Step 6: Final answer
    x = 581,864.32

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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.