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Finding the Fourth Proportional to 523,762.32, 722,619.56 and 305,920.92

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Solution

The fourth proportional to 523,762.32, 722,619.56 and 305,920.92 is: 422,070.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,762.32 : 722,619.56 = 305,920.92 : x
  2. Step 2: Convert to fraction form
    523,762.32/722,619.56 = 305,920.92/x
  3. Step 3: Cross multiply
    523,762.32x = 722,619.56 × 305,920.92
  4. Step 4: Simplify right side
    523,762.32x = 221,064,440,605.20
  5. Step 5: Solve for x
    x = 221,064,440,605.20/523,762.32
  6. Step 6: Final answer
    x = 422,070.15

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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.