Home / 720,875.42-1,081,377.72-208,532.51

Finding the Fourth Proportional to 720,875.42, 1,081,377.72 and 208,532.51

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Solution

The fourth proportional to 720,875.42, 1,081,377.72 and 208,532.51 is: 312,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,875.42 : 1,081,377.72 = 208,532.51 : x
  2. Step 2: Convert to fraction form
    720,875.42/1,081,377.72 = 208,532.51/x
  3. Step 3: Cross multiply
    720,875.42x = 1,081,377.72 × 208,532.51
  4. Step 4: Simplify right side
    720,875.42x = 225,502,412,131.13
  5. Step 5: Solve for x
    x = 225,502,412,131.13/720,875.42
  6. Step 6: Final answer
    x = 312,817.45

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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.