Home / 1,115,812.47-1,674,431.51-405,772.95

Finding the Fourth Proportional to 1,115,812.47, 1,674,431.51 and 405,772.95

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Solution

The fourth proportional to 1,115,812.47, 1,674,431.51 and 405,772.95 is: 608,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,812.47 : 1,674,431.51 = 405,772.95 : x
  2. Step 2: Convert to fraction form
    1,115,812.47/1,674,431.51 = 405,772.95/x
  3. Step 3: Cross multiply
    1,115,812.47x = 1,674,431.51 × 405,772.95
  4. Step 4: Simplify right side
    1,115,812.47x = 679,439,011,356.79
  5. Step 5: Solve for x
    x = 679,439,011,356.79/1,115,812.47
  6. Step 6: Final answer
    x = 608,918.64

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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.