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Finding the Fourth Proportional to 504,465.45, 696,128.62 and 289,575.69

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Solution

The fourth proportional to 504,465.45, 696,128.62 and 289,575.69 is: 399,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,465.45 : 696,128.62 = 289,575.69 : x
  2. Step 2: Convert to fraction form
    504,465.45/696,128.62 = 289,575.69/x
  3. Step 3: Cross multiply
    504,465.45x = 696,128.62 × 289,575.69
  4. Step 4: Simplify right side
    504,465.45x = 201,581,925,465.25
  5. Step 5: Solve for x
    x = 201,581,925,465.25/504,465.45
  6. Step 6: Final answer
    x = 399,595.11

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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.