Home / 1,216,057.05-1,678,159.13-664,775.19

Finding the Fourth Proportional to 1,216,057.05, 1,678,159.13 and 664,775.19

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Solution

The fourth proportional to 1,216,057.05, 1,678,159.13 and 664,775.19 is: 917,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,057.05 : 1,678,159.13 = 664,775.19 : x
  2. Step 2: Convert to fraction form
    1,216,057.05/1,678,159.13 = 664,775.19/x
  3. Step 3: Cross multiply
    1,216,057.05x = 1,678,159.13 × 664,775.19
  4. Step 4: Simplify right side
    1,216,057.05x = 1,115,598,551,172.11
  5. Step 5: Solve for x
    x = 1,115,598,551,172.11/1,216,057.05
  6. Step 6: Final answer
    x = 917,389.98

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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.