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Finding the Fourth Proportional to 572,690.77, 790,267.16 and 330,989.00

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Solution

The fourth proportional to 572,690.77, 790,267.16 and 330,989.00 is: 456,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,690.77 : 790,267.16 = 330,989.00 : x
  2. Step 2: Convert to fraction form
    572,690.77/790,267.16 = 330,989.00/x
  3. Step 3: Cross multiply
    572,690.77x = 790,267.16 × 330,989.00
  4. Step 4: Simplify right side
    572,690.77x = 261,569,733,897.38
  5. Step 5: Solve for x
    x = 261,569,733,897.38/572,690.77
  6. Step 6: Final answer
    x = 456,738.17

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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.