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Finding the Fourth Proportional to 525,853.52, 725,826.72 and 311,068.25

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Solution

The fourth proportional to 525,853.52, 725,826.72 and 311,068.25 is: 429,362.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,853.52 : 725,826.72 = 311,068.25 : x
  2. Step 2: Convert to fraction form
    525,853.52/725,826.72 = 311,068.25/x
  3. Step 3: Cross multiply
    525,853.52x = 725,826.72 × 311,068.25
  4. Step 4: Simplify right side
    525,853.52x = 225,781,647,852.86
  5. Step 5: Solve for x
    x = 225,781,647,852.86/525,853.52
  6. Step 6: Final answer
    x = 429,362.25

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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.