Home / 570,272.45-787,000.79-315,623.57

Finding the Fourth Proportional to 570,272.45, 787,000.79 and 315,623.57

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Solution

The fourth proportional to 570,272.45, 787,000.79 and 315,623.57 is: 435,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,272.45 : 787,000.79 = 315,623.57 : x
  2. Step 2: Convert to fraction form
    570,272.45/787,000.79 = 315,623.57/x
  3. Step 3: Cross multiply
    570,272.45x = 787,000.79 × 315,623.57
  4. Step 4: Simplify right side
    570,272.45x = 248,395,995,786.68
  5. Step 5: Solve for x
    x = 248,395,995,786.68/570,272.45
  6. Step 6: Final answer
    x = 435,574.26

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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.