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Finding the Fourth Proportional to 535,612.72, 803,554.08 and 378,148.72

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Solution

The fourth proportional to 535,612.72, 803,554.08 and 378,148.72 is: 567,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,612.72 : 803,554.08 = 378,148.72 : x
  2. Step 2: Convert to fraction form
    535,612.72/803,554.08 = 378,148.72/x
  3. Step 3: Cross multiply
    535,612.72x = 803,554.08 × 378,148.72
  4. Step 4: Simplify right side
    535,612.72x = 303,862,946,802.78
  5. Step 5: Solve for x
    x = 303,862,946,802.78/535,612.72
  6. Step 6: Final answer
    x = 567,318.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.