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Finding the Fourth Proportional to 528,508.05, 729,337.41 and 286,784.48

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Solution

The fourth proportional to 528,508.05, 729,337.41 and 286,784.48 is: 395,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,508.05 : 729,337.41 = 286,784.48 : x
  2. Step 2: Convert to fraction form
    528,508.05/729,337.41 = 286,784.48/x
  3. Step 3: Cross multiply
    528,508.05x = 729,337.41 × 286,784.48
  4. Step 4: Simplify right side
    528,508.05x = 209,162,649,871.40
  5. Step 5: Solve for x
    x = 209,162,649,871.40/528,508.05
  6. Step 6: Final answer
    x = 395,760.58

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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.