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Finding the Fourth Proportional to 529,521.85, 730,747.55 and 287,804.35

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Solution

The fourth proportional to 529,521.85, 730,747.55 and 287,804.35 is: 397,174.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,521.85 : 730,747.55 = 287,804.35 : x
  2. Step 2: Convert to fraction form
    529,521.85/730,747.55 = 287,804.35/x
  3. Step 3: Cross multiply
    529,521.85x = 730,747.55 × 287,804.35
  4. Step 4: Simplify right side
    529,521.85x = 210,312,318,549.08
  5. Step 5: Solve for x
    x = 210,312,318,549.08/529,521.85
  6. Step 6: Final answer
    x = 397,174.02

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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.