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Finding the Fourth Proportional to 570,496.76, 787,285.52 and 315,864.34

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Solution

The fourth proportional to 570,496.76, 787,285.52 and 315,864.34 is: 435,892.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,496.76 : 787,285.52 = 315,864.34 : x
  2. Step 2: Convert to fraction form
    570,496.76/787,285.52 = 315,864.34/x
  3. Step 3: Cross multiply
    570,496.76x = 787,285.52 × 315,864.34
  4. Step 4: Simplify right side
    570,496.76x = 248,675,421,166.36
  5. Step 5: Solve for x
    x = 248,675,421,166.36/570,496.76
  6. Step 6: Final answer
    x = 435,892.78

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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.