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Finding the Fourth Proportional to 528,031.92, 728,418.04 and 377,216.40

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Solution

The fourth proportional to 528,031.92, 728,418.04 and 377,216.40 is: 520,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,031.92 : 728,418.04 = 377,216.40 : x
  2. Step 2: Convert to fraction form
    528,031.92/728,418.04 = 377,216.40/x
  3. Step 3: Cross multiply
    528,031.92x = 728,418.04 × 377,216.40
  4. Step 4: Simplify right side
    528,031.92x = 274,771,230,743.86
  5. Step 5: Solve for x
    x = 274,771,230,743.86/528,031.92
  6. Step 6: Final answer
    x = 520,368.60

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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.