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Finding the Fourth Proportional to 528,096.40, 790,832.40 and 423,120.40

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Solution

The fourth proportional to 528,096.40, 790,832.40 and 423,120.40 is: 633,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,096.40 : 790,832.40 = 423,120.40 : x
  2. Step 2: Convert to fraction form
    528,096.40/790,832.40 = 423,120.40/x
  3. Step 3: Cross multiply
    528,096.40x = 790,832.40 × 423,120.40
  4. Step 4: Simplify right side
    528,096.40x = 334,617,321,420.96
  5. Step 5: Solve for x
    x = 334,617,321,420.96/528,096.40
  6. Step 6: Final answer
    x = 633,629.24

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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.