Home / 621,153.92-931,066.40-321,332.64

Finding the Fourth Proportional to 621,153.92, 931,066.40 and 321,332.64

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Solution

The fourth proportional to 621,153.92, 931,066.40 and 321,332.64 is: 481,655.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,153.92 : 931,066.40 = 321,332.64 : x
  2. Step 2: Convert to fraction form
    621,153.92/931,066.40 = 321,332.64/x
  3. Step 3: Cross multiply
    621,153.92x = 931,066.40 × 321,332.64
  4. Step 4: Simplify right side
    621,153.92x = 299,182,024,327.30
  5. Step 5: Solve for x
    x = 299,182,024,327.30/621,153.92
  6. Step 6: Final answer
    x = 481,655.21

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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.