Home / 409,222.12-611,461.01-320,264.68

Finding the Fourth Proportional to 409,222.12, 611,461.01 and 320,264.68

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Solution

The fourth proportional to 409,222.12, 611,461.01 and 320,264.68 is: 478,540.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,222.12 : 611,461.01 = 320,264.68 : x
  2. Step 2: Convert to fraction form
    409,222.12/611,461.01 = 320,264.68/x
  3. Step 3: Cross multiply
    409,222.12x = 611,461.01 × 320,264.68
  4. Step 4: Simplify right side
    409,222.12x = 195,829,364,700.13
  5. Step 5: Solve for x
    x = 195,829,364,700.13/409,222.12
  6. Step 6: Final answer
    x = 478,540.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.