Home / 687,587.82-948,887.55-385,804.14

Finding the Fourth Proportional to 687,587.82, 948,887.55 and 385,804.14

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Solution

The fourth proportional to 687,587.82, 948,887.55 and 385,804.14 is: 532,418.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,587.82 : 948,887.55 = 385,804.14 : x
  2. Step 2: Convert to fraction form
    687,587.82/948,887.55 = 385,804.14/x
  3. Step 3: Cross multiply
    687,587.82x = 948,887.55 × 385,804.14
  4. Step 4: Simplify right side
    687,587.82x = 366,084,745,184.46
  5. Step 5: Solve for x
    x = 366,084,745,184.46/687,587.82
  6. Step 6: Final answer
    x = 532,418.89

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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.