Home / 502,905.42-693,839.62-285,090.74

Finding the Fourth Proportional to 502,905.42, 693,839.62 and 285,090.74

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Solution

The fourth proportional to 502,905.42, 693,839.62 and 285,090.74 is: 393,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,905.42 : 693,839.62 = 285,090.74 : x
  2. Step 2: Convert to fraction form
    502,905.42/693,839.62 = 285,090.74/x
  3. Step 3: Cross multiply
    502,905.42x = 693,839.62 × 285,090.74
  4. Step 4: Simplify right side
    502,905.42x = 197,807,250,707.12
  5. Step 5: Solve for x
    x = 197,807,250,707.12/502,905.42
  6. Step 6: Final answer
    x = 393,328.93

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1.5x scale

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.