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Finding the Fourth Proportional to 528,128.24, 728,807.62 and 301,768.88

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Solution

The fourth proportional to 528,128.24, 728,807.62 and 301,768.88 is: 416,435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,128.24 : 728,807.62 = 301,768.88 : x
  2. Step 2: Convert to fraction form
    528,128.24/728,807.62 = 301,768.88/x
  3. Step 3: Cross multiply
    528,128.24x = 728,807.62 × 301,768.88
  4. Step 4: Simplify right side
    528,128.24x = 219,931,459,222.87
  5. Step 5: Solve for x
    x = 219,931,459,222.87/528,128.24
  6. Step 6: Final answer
    x = 416,435.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.