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Finding the Fourth Proportional to 515,457, 711,641.70 and 336,920.04

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Solution

The fourth proportional to 515,457, 711,641.70 and 336,920.04 is: 465,152.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,457 : 711,641.70 = 336,920.04 : x
  2. Step 2: Convert to fraction form
    515,457/711,641.70 = 336,920.04/x
  3. Step 3: Cross multiply
    515,457x = 711,641.70 × 336,920.04
  4. Step 4: Simplify right side
    515,457x = 239,766,350,029.67
  5. Step 5: Solve for x
    x = 239,766,350,029.67/515,457
  6. Step 6: Final answer
    x = 465,152.96

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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.