Home / 616,815.44-851,440.20-402,007.76

Finding the Fourth Proportional to 616,815.44, 851,440.20 and 402,007.76

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Solution

The fourth proportional to 616,815.44, 851,440.20 and 402,007.76 is: 554,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,815.44 : 851,440.20 = 402,007.76 : x
  2. Step 2: Convert to fraction form
    616,815.44/851,440.20 = 402,007.76/x
  3. Step 3: Cross multiply
    616,815.44x = 851,440.20 × 402,007.76
  4. Step 4: Simplify right side
    616,815.44x = 342,285,567,575.95
  5. Step 5: Solve for x
    x = 342,285,567,575.95/616,815.44
  6. Step 6: Final answer
    x = 554,923.80

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1.5x scale

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.