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Finding the Fourth Proportional to 525,605.05, 725,341.79 and 310,743.24

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Solution

The fourth proportional to 525,605.05, 725,341.79 and 310,743.24 is: 428,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,605.05 : 725,341.79 = 310,743.24 : x
  2. Step 2: Convert to fraction form
    525,605.05/725,341.79 = 310,743.24/x
  3. Step 3: Cross multiply
    525,605.05x = 725,341.79 × 310,743.24
  4. Step 4: Simplify right side
    525,605.05x = 225,395,054,240.90
  5. Step 5: Solve for x
    x = 225,395,054,240.90/525,605.05
  6. Step 6: Final answer
    x = 428,829.70

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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.