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Finding the Fourth Proportional to 430,904.64, 644,304.96 and 393,260.70

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Solution

The fourth proportional to 430,904.64, 644,304.96 and 393,260.70 is: 588,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,904.64 : 644,304.96 = 393,260.70 : x
  2. Step 2: Convert to fraction form
    430,904.64/644,304.96 = 393,260.70/x
  3. Step 3: Cross multiply
    430,904.64x = 644,304.96 × 393,260.70
  4. Step 4: Simplify right side
    430,904.64x = 253,379,819,583.07
  5. Step 5: Solve for x
    x = 253,379,819,583.07/430,904.64
  6. Step 6: Final answer
    x = 588,018.31

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1.5x scale

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.