Home / 1,186,109.82-1,779,186.06-428,008.14

Finding the Fourth Proportional to 1,186,109.82, 1,779,186.06 and 428,008.14

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Solution

The fourth proportional to 1,186,109.82, 1,779,186.06 and 428,008.14 is: 642,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,109.82 : 1,779,186.06 = 428,008.14 : x
  2. Step 2: Convert to fraction form
    1,186,109.82/1,779,186.06 = 428,008.14/x
  3. Step 3: Cross multiply
    1,186,109.82x = 1,779,186.06 × 428,008.14
  4. Step 4: Simplify right side
    1,186,109.82x = 761,506,116,254.53
  5. Step 5: Solve for x
    x = 761,506,116,254.53/1,186,109.82
  6. Step 6: Final answer
    x = 642,019.91

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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.