Home / 1,189,819.50-1,784,058.55-390,886.53

Finding the Fourth Proportional to 1,189,819.50, 1,784,058.55 and 390,886.53

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Solution

The fourth proportional to 1,189,819.50, 1,784,058.55 and 390,886.53 is: 586,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,819.50 : 1,784,058.55 = 390,886.53 : x
  2. Step 2: Convert to fraction form
    1,189,819.50/1,784,058.55 = 390,886.53/x
  3. Step 3: Cross multiply
    1,189,819.50x = 1,784,058.55 × 390,886.53
  4. Step 4: Simplify right side
    1,189,819.50x = 697,364,455,926.33
  5. Step 5: Solve for x
    x = 697,364,455,926.33/1,189,819.50
  6. Step 6: Final answer
    x = 586,109.45

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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.