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Finding the Fourth Proportional to 693,415.24, 956,628.06 and 421,439.32

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Solution

The fourth proportional to 693,415.24, 956,628.06 and 421,439.32 is: 581,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,415.24 : 956,628.06 = 421,439.32 : x
  2. Step 2: Convert to fraction form
    693,415.24/956,628.06 = 421,439.32/x
  3. Step 3: Cross multiply
    693,415.24x = 956,628.06 × 421,439.32
  4. Step 4: Simplify right side
    693,415.24x = 403,160,679,099.32
  5. Step 5: Solve for x
    x = 403,160,679,099.32/693,415.24
  6. Step 6: Final answer
    x = 581,413.06

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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.