Home / 687,846.80-1,031,770.20-435,904.40

Finding the Fourth Proportional to 687,846.80, 1,031,770.20 and 435,904.40

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Solution

The fourth proportional to 687,846.80, 1,031,770.20 and 435,904.40 is: 653,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,846.80 : 1,031,770.20 = 435,904.40 : x
  2. Step 2: Convert to fraction form
    687,846.80/1,031,770.20 = 435,904.40/x
  3. Step 3: Cross multiply
    687,846.80x = 1,031,770.20 × 435,904.40
  4. Step 4: Simplify right side
    687,846.80x = 449,753,169,968.88
  5. Step 5: Solve for x
    x = 449,753,169,968.88/687,846.80
  6. Step 6: Final answer
    x = 653,856.60

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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.