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Finding the Fourth Proportional to 430,818.71, 644,428.05 and 302,726.01

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Solution

The fourth proportional to 430,818.71, 644,428.05 and 302,726.01 is: 452,824.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,818.71 : 644,428.05 = 302,726.01 : x
  2. Step 2: Convert to fraction form
    430,818.71/644,428.05 = 302,726.01/x
  3. Step 3: Cross multiply
    430,818.71x = 644,428.05 × 302,726.01
  4. Step 4: Simplify right side
    430,818.71x = 195,085,132,308.58
  5. Step 5: Solve for x
    x = 195,085,132,308.58/430,818.71
  6. Step 6: Final answer
    x = 452,824.19

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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.