Home / 811,810.81-1,217,691.10-385,653.41

Finding the Fourth Proportional to 811,810.81, 1,217,691.10 and 385,653.41

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Solution

The fourth proportional to 811,810.81, 1,217,691.10 and 385,653.41 is: 578,468.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,810.81 : 1,217,691.10 = 385,653.41 : x
  2. Step 2: Convert to fraction form
    811,810.81/1,217,691.10 = 385,653.41/x
  3. Step 3: Cross multiply
    811,810.81x = 1,217,691.10 × 385,653.41
  4. Step 4: Simplify right side
    811,810.81x = 469,606,725,041.65
  5. Step 5: Solve for x
    x = 469,606,725,041.65/811,810.81
  6. Step 6: Final answer
    x = 578,468.18

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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.