Home / 743,130.78-1,114,410.93-316,396.05

Finding the Fourth Proportional to 743,130.78, 1,114,410.93 and 316,396.05

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Solution

The fourth proportional to 743,130.78, 1,114,410.93 and 316,396.05 is: 474,472.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,130.78 : 1,114,410.93 = 316,396.05 : x
  2. Step 2: Convert to fraction form
    743,130.78/1,114,410.93 = 316,396.05/x
  3. Step 3: Cross multiply
    743,130.78x = 1,114,410.93 × 316,396.05
  4. Step 4: Simplify right side
    743,130.78x = 352,595,216,328.83
  5. Step 5: Solve for x
    x = 352,595,216,328.83/743,130.78
  6. Step 6: Final answer
    x = 474,472.63

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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.