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Finding the Fourth Proportional to 693,339.48, 956,796.84 and 387,420.84

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Solution

The fourth proportional to 693,339.48, 956,796.84 and 387,420.84 is: 534,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,339.48 : 956,796.84 = 387,420.84 : x
  2. Step 2: Convert to fraction form
    693,339.48/956,796.84 = 387,420.84/x
  3. Step 3: Cross multiply
    693,339.48x = 956,796.84 × 387,420.84
  4. Step 4: Simplify right side
    693,339.48x = 370,683,035,462.15
  5. Step 5: Solve for x
    x = 370,683,035,462.15/693,339.48
  6. Step 6: Final answer
    x = 534,634.25

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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.