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Finding the Fourth Proportional to 499,622.94, 689,764.95 and 330,348.06

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Solution

The fourth proportional to 499,622.94, 689,764.95 and 330,348.06 is: 456,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,622.94 : 689,764.95 = 330,348.06 : x
  2. Step 2: Convert to fraction form
    499,622.94/689,764.95 = 330,348.06/x
  3. Step 3: Cross multiply
    499,622.94x = 689,764.95 × 330,348.06
  4. Step 4: Simplify right side
    499,622.94x = 227,862,513,088.50
  5. Step 5: Solve for x
    x = 227,862,513,088.50/499,622.94
  6. Step 6: Final answer
    x = 456,068.96

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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.