Home / 553,268.20-828,881.70-315,905.80

Finding the Fourth Proportional to 553,268.20, 828,881.70 and 315,905.80

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Solution

The fourth proportional to 553,268.20, 828,881.70 and 315,905.80 is: 473,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,268.20 : 828,881.70 = 315,905.80 : x
  2. Step 2: Convert to fraction form
    553,268.20/828,881.70 = 315,905.80/x
  3. Step 3: Cross multiply
    553,268.20x = 828,881.70 × 315,905.80
  4. Step 4: Simplify right side
    553,268.20x = 261,848,536,543.86
  5. Step 5: Solve for x
    x = 261,848,536,543.86/553,268.20
  6. Step 6: Final answer
    x = 473,275.96

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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.