Home / 589,421.81-813,402.10-321,149.81

Finding the Fourth Proportional to 589,421.81, 813,402.10 and 321,149.81

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Solution

The fourth proportional to 589,421.81, 813,402.10 and 321,149.81 is: 443,186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,421.81 : 813,402.10 = 321,149.81 : x
  2. Step 2: Convert to fraction form
    589,421.81/813,402.10 = 321,149.81/x
  3. Step 3: Cross multiply
    589,421.81x = 813,402.10 × 321,149.81
  4. Step 4: Simplify right side
    589,421.81x = 261,223,932,303.54
  5. Step 5: Solve for x
    x = 261,223,932,303.54/589,421.81
  6. Step 6: Final answer
    x = 443,186.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.