Home / 420,411,400.29-630,614,806.52-171,415,680.71

Finding the Fourth Proportional to 420,411,400.29, 630,614,806.52 and 171,415,680.71

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Solution

The fourth proportional to 420,411,400.29, 630,614,806.52 and 171,415,680.71 is: 257,122,585.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,411,400.29 : 630,614,806.52 = 171,415,680.71 : x
  2. Step 2: Convert to fraction form
    420,411,400.29/630,614,806.52 = 171,415,680.71/x
  3. Step 3: Cross multiply
    420,411,400.29x = 630,614,806.52 × 171,415,680.71
  4. Step 4: Simplify right side
    420,411,400.29x = 108,097,266,321,420,592
  5. Step 5: Solve for x
    x = 108,097,266,321,420,592/420,411,400.29
  6. Step 6: Final answer
    x = 257,122,585.75

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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.