Home / 1,129,435.76-1,558,643.64-620,133.68

Finding the Fourth Proportional to 1,129,435.76, 1,558,643.64 and 620,133.68

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Solution

The fourth proportional to 1,129,435.76, 1,558,643.64 and 620,133.68 is: 855,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,435.76 : 1,558,643.64 = 620,133.68 : x
  2. Step 2: Convert to fraction form
    1,129,435.76/1,558,643.64 = 620,133.68/x
  3. Step 3: Cross multiply
    1,129,435.76x = 1,558,643.64 × 620,133.68
  4. Step 4: Simplify right side
    1,129,435.76x = 966,567,416,281.80
  5. Step 5: Solve for x
    x = 966,567,416,281.80/1,129,435.76
  6. Step 6: Final answer
    x = 855,796.72

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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.