Home / 570,917.08-787,865.54-312,803.81

Finding the Fourth Proportional to 570,917.08, 787,865.54 and 312,803.81

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Solution

The fourth proportional to 570,917.08, 787,865.54 and 312,803.81 is: 431,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,917.08 : 787,865.54 = 312,803.81 : x
  2. Step 2: Convert to fraction form
    570,917.08/787,865.54 = 312,803.81/x
  3. Step 3: Cross multiply
    570,917.08x = 787,865.54 × 312,803.81
  4. Step 4: Simplify right side
    570,917.08x = 246,447,342,679.71
  5. Step 5: Solve for x
    x = 246,447,342,679.71/570,917.08
  6. Step 6: Final answer
    x = 431,669.24

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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.