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Finding the Fourth Proportional to 626,534.64, 864,608.40 and 354,654

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Solution

The fourth proportional to 626,534.64, 864,608.40 and 354,654 is: 489,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,534.64 : 864,608.40 = 354,654 : x
  2. Step 2: Convert to fraction form
    626,534.64/864,608.40 = 354,654/x
  3. Step 3: Cross multiply
    626,534.64x = 864,608.40 × 354,654
  4. Step 4: Simplify right side
    626,534.64x = 306,636,827,493.60
  5. Step 5: Solve for x
    x = 306,636,827,493.60/626,534.64
  6. Step 6: Final answer
    x = 489,417.20

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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.