Home / 686,148.80-1,029,806.40-553,179.20

Finding the Fourth Proportional to 686,148.80, 1,029,806.40 and 553,179.20

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Solution

The fourth proportional to 686,148.80, 1,029,806.40 and 553,179.20 is: 830,238.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,148.80 : 1,029,806.40 = 553,179.20 : x
  2. Step 2: Convert to fraction form
    686,148.80/1,029,806.40 = 553,179.20/x
  3. Step 3: Cross multiply
    686,148.80x = 1,029,806.40 × 553,179.20
  4. Step 4: Simplify right side
    686,148.80x = 569,667,480,506.88
  5. Step 5: Solve for x
    x = 569,667,480,506.88/686,148.80
  6. Step 6: Final answer
    x = 830,238.98

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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.