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Finding the Fourth Proportional to 572,325.84, 858,507.06 and 287,861.12

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Solution

The fourth proportional to 572,325.84, 858,507.06 and 287,861.12 is: 431,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,325.84 : 858,507.06 = 287,861.12 : x
  2. Step 2: Convert to fraction form
    572,325.84/858,507.06 = 287,861.12/x
  3. Step 3: Cross multiply
    572,325.84x = 858,507.06 × 287,861.12
  4. Step 4: Simplify right side
    572,325.84x = 247,130,803,819.51
  5. Step 5: Solve for x
    x = 247,130,803,819.51/572,325.84
  6. Step 6: Final answer
    x = 431,800.88

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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.