Home / 1,289,672.20-1,779,712.14-716,697.64

Finding the Fourth Proportional to 1,289,672.20, 1,779,712.14 and 716,697.64

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Solution

The fourth proportional to 1,289,672.20, 1,779,712.14 and 716,697.64 is: 989,023.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,672.20 : 1,779,712.14 = 716,697.64 : x
  2. Step 2: Convert to fraction form
    1,289,672.20/1,779,712.14 = 716,697.64/x
  3. Step 3: Cross multiply
    1,289,672.20x = 1,779,712.14 × 716,697.64
  4. Step 4: Simplify right side
    1,289,672.20x = 1,275,515,490,617.35
  5. Step 5: Solve for x
    x = 1,275,515,490,617.35/1,289,672.20
  6. Step 6: Final answer
    x = 989,023.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.