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Finding the Fourth Proportional to 528,606.40, 792,996.72 and 213,036.64

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Solution

The fourth proportional to 528,606.40, 792,996.72 and 213,036.64 is: 319,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,606.40 : 792,996.72 = 213,036.64 : x
  2. Step 2: Convert to fraction form
    528,606.40/792,996.72 = 213,036.64/x
  3. Step 3: Cross multiply
    528,606.40x = 792,996.72 × 213,036.64
  4. Step 4: Simplify right side
    528,606.40x = 168,937,356,759.82
  5. Step 5: Solve for x
    x = 168,937,356,759.82/528,606.40
  6. Step 6: Final answer
    x = 319,590.07

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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.