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Finding the Fourth Proportional to 626,740.45, 864,955.35 and 354,856.25

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Solution

The fourth proportional to 626,740.45, 864,955.35 and 354,856.25 is: 489,731.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,740.45 : 864,955.35 = 354,856.25 : x
  2. Step 2: Convert to fraction form
    626,740.45/864,955.35 = 354,856.25/x
  3. Step 3: Cross multiply
    626,740.45x = 864,955.35 × 354,856.25
  4. Step 4: Simplify right side
    626,740.45x = 306,934,814,080.83
  5. Step 5: Solve for x
    x = 306,934,814,080.83/626,740.45
  6. Step 6: Final answer
    x = 489,731.94

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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.