Home / 740,861.28-1,111,357.36-208,386.72

Finding the Fourth Proportional to 740,861.28, 1,111,357.36 and 208,386.72

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Solution

The fourth proportional to 740,861.28, 1,111,357.36 and 208,386.72 is: 312,598.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,861.28 : 1,111,357.36 = 208,386.72 : x
  2. Step 2: Convert to fraction form
    740,861.28/1,111,357.36 = 208,386.72/x
  3. Step 3: Cross multiply
    740,861.28x = 1,111,357.36 × 208,386.72
  4. Step 4: Simplify right side
    740,861.28x = 231,592,114,998.26
  5. Step 5: Solve for x
    x = 231,592,114,998.26/740,861.28
  6. Step 6: Final answer
    x = 312,598.49

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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.