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Finding the Fourth Proportional to 528,620.85, 729,497.48 and 286,903.42

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Solution

The fourth proportional to 528,620.85, 729,497.48 and 286,903.42 is: 395,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,620.85 : 729,497.48 = 286,903.42 : x
  2. Step 2: Convert to fraction form
    528,620.85/729,497.48 = 286,903.42/x
  3. Step 3: Cross multiply
    528,620.85x = 729,497.48 × 286,903.42
  4. Step 4: Simplify right side
    528,620.85x = 209,295,321,893.38
  5. Step 5: Solve for x
    x = 209,295,321,893.38/528,620.85
  6. Step 6: Final answer
    x = 395,927.10

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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.