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Finding the Fourth Proportional to 570,508.67, 787,302.02 and 312,401.89

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Solution

The fourth proportional to 570,508.67, 787,302.02 and 312,401.89 is: 431,114.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,508.67 : 787,302.02 = 312,401.89 : x
  2. Step 2: Convert to fraction form
    570,508.67/787,302.02 = 312,401.89/x
  3. Step 3: Cross multiply
    570,508.67x = 787,302.02 × 312,401.89
  4. Step 4: Simplify right side
    570,508.67x = 245,954,639,048.82
  5. Step 5: Solve for x
    x = 245,954,639,048.82/570,508.67
  6. Step 6: Final answer
    x = 431,114.64

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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.