Home / 686,554.42-1,028,490.92-326,212.46

Finding the Fourth Proportional to 686,554.42, 1,028,490.92 and 326,212.46

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Solution

The fourth proportional to 686,554.42, 1,028,490.92 and 326,212.46 is: 488,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,554.42 : 1,028,490.92 = 326,212.46 : x
  2. Step 2: Convert to fraction form
    686,554.42/1,028,490.92 = 326,212.46/x
  3. Step 3: Cross multiply
    686,554.42x = 1,028,490.92 × 326,212.46
  4. Step 4: Simplify right side
    686,554.42x = 335,506,553,100.86
  5. Step 5: Solve for x
    x = 335,506,553,100.86/686,554.42
  6. Step 6: Final answer
    x = 488,681.66

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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.