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Finding the Fourth Proportional to 570,510.27, 787,356.99 and 315,861.46

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Solution

The fourth proportional to 570,510.27, 787,356.99 and 315,861.46 is: 435,918.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,510.27 : 787,356.99 = 315,861.46 : x
  2. Step 2: Convert to fraction form
    570,510.27/787,356.99 = 315,861.46/x
  3. Step 3: Cross multiply
    570,510.27x = 787,356.99 × 315,861.46
  4. Step 4: Simplify right side
    570,510.27x = 248,695,726,434.21
  5. Step 5: Solve for x
    x = 248,695,726,434.21/570,510.27
  6. Step 6: Final answer
    x = 435,918.05

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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.