Home / 804,521.30-1,109,921.96-518,207.57

Finding the Fourth Proportional to 804,521.30, 1,109,921.96 and 518,207.57

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Solution

The fourth proportional to 804,521.30, 1,109,921.96 and 518,207.57 is: 714,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,521.30 : 1,109,921.96 = 518,207.57 : x
  2. Step 2: Convert to fraction form
    804,521.30/1,109,921.96 = 518,207.57/x
  3. Step 3: Cross multiply
    804,521.30x = 1,109,921.96 × 518,207.57
  4. Step 4: Simplify right side
    804,521.30x = 575,169,961,781.24
  5. Step 5: Solve for x
    x = 575,169,961,781.24/804,521.30
  6. Step 6: Final answer
    x = 714,921.98

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1.5x scale

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.