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Finding the Fourth Proportional to 528,530.10, 793,313.55 and 262,590.90

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Solution

The fourth proportional to 528,530.10, 793,313.55 and 262,590.90 is: 394,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,530.10 : 793,313.55 = 262,590.90 : x
  2. Step 2: Convert to fraction form
    528,530.10/793,313.55 = 262,590.90/x
  3. Step 3: Cross multiply
    528,530.10x = 793,313.55 × 262,590.90
  4. Step 4: Simplify right side
    528,530.10x = 208,316,919,076.70
  5. Step 5: Solve for x
    x = 208,316,919,076.70/528,530.10
  6. Step 6: Final answer
    x = 394,143.91

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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.