Home / 830,057.10-1,246,252.05-515,129.10

Finding the Fourth Proportional to 830,057.10, 1,246,252.05 and 515,129.10

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Solution

The fourth proportional to 830,057.10, 1,246,252.05 and 515,129.10 is: 773,417.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,057.10 : 1,246,252.05 = 515,129.10 : x
  2. Step 2: Convert to fraction form
    830,057.10/1,246,252.05 = 515,129.10/x
  3. Step 3: Cross multiply
    830,057.10x = 1,246,252.05 × 515,129.10
  4. Step 4: Simplify right side
    830,057.10x = 641,980,696,889.66
  5. Step 5: Solve for x
    x = 641,980,696,889.66/830,057.10
  6. Step 6: Final answer
    x = 773,417.51

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Double scale
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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.