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Finding the Fourth Proportional to 527,465.52, 728,319.60 and 487,163.16

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Solution

The fourth proportional to 527,465.52, 728,319.60 and 487,163.16 is: 672,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,465.52 : 728,319.60 = 487,163.16 : x
  2. Step 2: Convert to fraction form
    527,465.52/728,319.60 = 487,163.16/x
  3. Step 3: Cross multiply
    527,465.52x = 728,319.60 × 487,163.16
  4. Step 4: Simplify right side
    527,465.52x = 354,810,477,825.94
  5. Step 5: Solve for x
    x = 354,810,477,825.94/527,465.52
  6. Step 6: Final answer
    x = 672,670.47

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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.