Home / 1,279,009.51-1,918,703.81-425,802.49

Finding the Fourth Proportional to 1,279,009.51, 1,918,703.81 and 425,802.49

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Solution

The fourth proportional to 1,279,009.51, 1,918,703.81 and 425,802.49 is: 638,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,009.51 : 1,918,703.81 = 425,802.49 : x
  2. Step 2: Convert to fraction form
    1,279,009.51/1,918,703.81 = 425,802.49/x
  3. Step 3: Cross multiply
    1,279,009.51x = 1,918,703.81 × 425,802.49
  4. Step 4: Simplify right side
    1,279,009.51x = 816,988,859,870.49
  5. Step 5: Solve for x
    x = 816,988,859,870.49/1,279,009.51
  6. Step 6: Final answer
    x = 638,766.84

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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.