Home / 1,289,118.20-1,779,267.66-716,355.32

Finding the Fourth Proportional to 1,289,118.20, 1,779,267.66 and 716,355.32

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Solution

The fourth proportional to 1,289,118.20, 1,779,267.66 and 716,355.32 is: 988,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,118.20 : 1,779,267.66 = 716,355.32 : x
  2. Step 2: Convert to fraction form
    1,289,118.20/1,779,267.66 = 716,355.32/x
  3. Step 3: Cross multiply
    1,289,118.20x = 1,779,267.66 × 716,355.32
  4. Step 4: Simplify right side
    1,289,118.20x = 1,274,587,853,944.95
  5. Step 5: Solve for x
    x = 1,274,587,853,944.95/1,289,118.20
  6. Step 6: Final answer
    x = 988,728.46

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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.