Home / 1,400,565.78-2,100,719.07-389,703.06

Finding the Fourth Proportional to 1,400,565.78, 2,100,719.07 and 389,703.06

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Solution

The fourth proportional to 1,400,565.78, 2,100,719.07 and 389,703.06 is: 584,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,565.78 : 2,100,719.07 = 389,703.06 : x
  2. Step 2: Convert to fraction form
    1,400,565.78/2,100,719.07 = 389,703.06/x
  3. Step 3: Cross multiply
    1,400,565.78x = 2,100,719.07 × 389,703.06
  4. Step 4: Simplify right side
    1,400,565.78x = 818,656,649,779.35
  5. Step 5: Solve for x
    x = 818,656,649,779.35/1,400,565.78
  6. Step 6: Final answer
    x = 584,518.53

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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.