Home / 686,807.40-1,030,211.10-447,658.95

Finding the Fourth Proportional to 686,807.40, 1,030,211.10 and 447,658.95

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Solution

The fourth proportional to 686,807.40, 1,030,211.10 and 447,658.95 is: 671,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,807.40 : 1,030,211.10 = 447,658.95 : x
  2. Step 2: Convert to fraction form
    686,807.40/1,030,211.10 = 447,658.95/x
  3. Step 3: Cross multiply
    686,807.40x = 1,030,211.10 × 447,658.95
  4. Step 4: Simplify right side
    686,807.40x = 461,183,219,304.35
  5. Step 5: Solve for x
    x = 461,183,219,304.35/686,807.40
  6. Step 6: Final answer
    x = 671,488.43

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Double scale
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Similar ratio
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1.5x scale

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.