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Finding the Fourth Proportional to 686,616.48, 1,030,209 and 370,701.88

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Solution

The fourth proportional to 686,616.48, 1,030,209 and 370,701.88 is: 556,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,616.48 : 1,030,209 = 370,701.88 : x
  2. Step 2: Convert to fraction form
    686,616.48/1,030,209 = 370,701.88/x
  3. Step 3: Cross multiply
    686,616.48x = 1,030,209 × 370,701.88
  4. Step 4: Simplify right side
    686,616.48x = 381,900,413,092.92
  5. Step 5: Solve for x
    x = 381,900,413,092.92/686,616.48
  6. Step 6: Final answer
    x = 556,206.30

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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.