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Finding the Fourth Proportional to 528,967.80, 729,975.54 and 302,613.30

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Solution

The fourth proportional to 528,967.80, 729,975.54 and 302,613.30 is: 417,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,967.80 : 729,975.54 = 302,613.30 : x
  2. Step 2: Convert to fraction form
    528,967.80/729,975.54 = 302,613.30/x
  3. Step 3: Cross multiply
    528,967.80x = 729,975.54 × 302,613.30
  4. Step 4: Simplify right side
    528,967.80x = 220,900,308,213.48
  5. Step 5: Solve for x
    x = 220,900,308,213.48/528,967.80
  6. Step 6: Final answer
    x = 417,606.34

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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.