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Finding the Fourth Proportional to 570,989.52, 787,975.61 and 312,849.59

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Solution

The fourth proportional to 570,989.52, 787,975.61 and 312,849.59 is: 431,737.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,989.52 : 787,975.61 = 312,849.59 : x
  2. Step 2: Convert to fraction form
    570,989.52/787,975.61 = 312,849.59/x
  3. Step 3: Cross multiply
    570,989.52x = 787,975.61 × 312,849.59
  4. Step 4: Simplify right side
    570,989.52x = 246,517,841,014.37
  5. Step 5: Solve for x
    x = 246,517,841,014.37/570,989.52
  6. Step 6: Final answer
    x = 431,737.94

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1.5x scale

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.