Home / 740,313.52-1,021,635.96-400,781.74

Finding the Fourth Proportional to 740,313.52, 1,021,635.96 and 400,781.74

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Solution

The fourth proportional to 740,313.52, 1,021,635.96 and 400,781.74 is: 553,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,313.52 : 1,021,635.96 = 400,781.74 : x
  2. Step 2: Convert to fraction form
    740,313.52/1,021,635.96 = 400,781.74/x
  3. Step 3: Cross multiply
    740,313.52x = 1,021,635.96 × 400,781.74
  4. Step 4: Simplify right side
    740,313.52x = 409,453,037,695.37
  5. Step 5: Solve for x
    x = 409,453,037,695.37/740,313.52
  6. Step 6: Final answer
    x = 553,080.59

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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.