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Finding the Fourth Proportional to 529,303.14, 730,441.33 and 287,587.67

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Solution

The fourth proportional to 529,303.14, 730,441.33 and 287,587.67 is: 396,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,303.14 : 730,441.33 = 287,587.67 : x
  2. Step 2: Convert to fraction form
    529,303.14/730,441.33 = 287,587.67/x
  3. Step 3: Cross multiply
    529,303.14x = 730,441.33 × 287,587.67
  4. Step 4: Simplify right side
    529,303.14x = 210,065,915,795.23
  5. Step 5: Solve for x
    x = 210,065,915,795.23/529,303.14
  6. Step 6: Final answer
    x = 396,872.60

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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.