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Finding the Fourth Proportional to 553,657.60, 831,470.55 and 404,066.80

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Solution

The fourth proportional to 553,657.60, 831,470.55 and 404,066.80 is: 606,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,657.60 : 831,470.55 = 404,066.80 : x
  2. Step 2: Convert to fraction form
    553,657.60/831,470.55 = 404,066.80/x
  3. Step 3: Cross multiply
    553,657.60x = 831,470.55 × 404,066.80
  4. Step 4: Simplify right side
    553,657.60x = 335,969,644,432.74
  5. Step 5: Solve for x
    x = 335,969,644,432.74/553,657.60
  6. Step 6: Final answer
    x = 606,818.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.