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Finding the Fourth Proportional to 616,700.78, 851,309.40 and 375,060.96

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Solution

The fourth proportional to 616,700.78, 851,309.40 and 375,060.96 is: 517,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,700.78 : 851,309.40 = 375,060.96 : x
  2. Step 2: Convert to fraction form
    616,700.78/851,309.40 = 375,060.96/x
  3. Step 3: Cross multiply
    616,700.78x = 851,309.40 × 375,060.96
  4. Step 4: Simplify right side
    616,700.78x = 319,292,920,821.02
  5. Step 5: Solve for x
    x = 319,292,920,821.02/616,700.78
  6. Step 6: Final answer
    x = 517,743.67

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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.