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Finding the Fourth Proportional to 717,160.45, 989,684.37 and 430,685.32

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Solution

The fourth proportional to 717,160.45, 989,684.37 and 430,685.32 is: 594,347.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,160.45 : 989,684.37 = 430,685.32 : x
  2. Step 2: Convert to fraction form
    717,160.45/989,684.37 = 430,685.32/x
  3. Step 3: Cross multiply
    717,160.45x = 989,684.37 × 430,685.32
  4. Step 4: Simplify right side
    717,160.45x = 426,242,527,118.24
  5. Step 5: Solve for x
    x = 426,242,527,118.24/717,160.45
  6. Step 6: Final answer
    x = 594,347.51

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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.