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Finding the Fourth Proportional to 528,473.34, 728,286.44 and 518,756.72

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Solution

The fourth proportional to 528,473.34, 728,286.44 and 518,756.72 is: 714,896.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,473.34 : 728,286.44 = 518,756.72 : x
  2. Step 2: Convert to fraction form
    528,473.34/728,286.44 = 518,756.72/x
  3. Step 3: Cross multiply
    528,473.34x = 728,286.44 × 518,756.72
  4. Step 4: Simplify right side
    528,473.34x = 377,803,478,599.66
  5. Step 5: Solve for x
    x = 377,803,478,599.66/528,473.34
  6. Step 6: Final answer
    x = 714,896.00

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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.