Home / 621,372.32-857,485.65-349,440.13

Finding the Fourth Proportional to 621,372.32, 857,485.65 and 349,440.13

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Solution

The fourth proportional to 621,372.32, 857,485.65 and 349,440.13 is: 482,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,372.32 : 857,485.65 = 349,440.13 : x
  2. Step 2: Convert to fraction form
    621,372.32/857,485.65 = 349,440.13/x
  3. Step 3: Cross multiply
    621,372.32x = 857,485.65 × 349,440.13
  4. Step 4: Simplify right side
    621,372.32x = 299,639,892,721.71
  5. Step 5: Solve for x
    x = 299,639,892,721.71/621,372.32
  6. Step 6: Final answer
    x = 482,222.79

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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.