Home / 811,854.10-1,218,724.54-475,136.40

Finding the Fourth Proportional to 811,854.10, 1,218,724.54 and 475,136.40

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Solution

The fourth proportional to 811,854.10, 1,218,724.54 and 475,136.40 is: 713,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,854.10 : 1,218,724.54 = 475,136.40 : x
  2. Step 2: Convert to fraction form
    811,854.10/1,218,724.54 = 475,136.40/x
  3. Step 3: Cross multiply
    811,854.10x = 1,218,724.54 × 475,136.40
  4. Step 4: Simplify right side
    811,854.10x = 579,060,392,965.84
  5. Step 5: Solve for x
    x = 579,060,392,965.84/811,854.10
  6. Step 6: Final answer
    x = 713,256.72

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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.