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Finding the Fourth Proportional to 528,215.58, 790,970.94 and 291,295.44

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Solution

The fourth proportional to 528,215.58, 790,970.94 and 291,295.44 is: 436,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,215.58 : 790,970.94 = 291,295.44 : x
  2. Step 2: Convert to fraction form
    528,215.58/790,970.94 = 291,295.44/x
  3. Step 3: Cross multiply
    528,215.58x = 790,970.94 × 291,295.44
  4. Step 4: Simplify right side
    528,215.58x = 230,406,227,994.51
  5. Step 5: Solve for x
    x = 230,406,227,994.51/528,215.58
  6. Step 6: Final answer
    x = 436,197.33

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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.