Home / 1,178,238-1,767,495.42-420,187.23

Finding the Fourth Proportional to 1,178,238, 1,767,495.42 and 420,187.23

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Solution

The fourth proportional to 1,178,238, 1,767,495.42 and 420,187.23 is: 630,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,238 : 1,767,495.42 = 420,187.23 : x
  2. Step 2: Convert to fraction form
    1,178,238/1,767,495.42 = 420,187.23/x
  3. Step 3: Cross multiply
    1,178,238x = 1,767,495.42 × 420,187.23
  4. Step 4: Simplify right side
    1,178,238x = 742,679,004,567.49
  5. Step 5: Solve for x
    x = 742,679,004,567.49/1,178,238
  6. Step 6: Final answer
    x = 630,330.21

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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.