Home / 742,980.78-1,114,237.78-316,512.14

Finding the Fourth Proportional to 742,980.78, 1,114,237.78 and 316,512.14

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Solution

The fourth proportional to 742,980.78, 1,114,237.78 and 316,512.14 is: 474,668.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,980.78 : 1,114,237.78 = 316,512.14 : x
  2. Step 2: Convert to fraction form
    742,980.78/1,114,237.78 = 316,512.14/x
  3. Step 3: Cross multiply
    742,980.78x = 1,114,237.78 × 316,512.14
  4. Step 4: Simplify right side
    742,980.78x = 352,669,784,216.65
  5. Step 5: Solve for x
    x = 352,669,784,216.65/742,980.78
  6. Step 6: Final answer
    x = 474,668.79

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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.