Home / 1,128,463.84-1,557,279.94-645,039.37

Finding the Fourth Proportional to 1,128,463.84, 1,557,279.94 and 645,039.37

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Solution

The fourth proportional to 1,128,463.84, 1,557,279.94 and 645,039.37 is: 890,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,463.84 : 1,557,279.94 = 645,039.37 : x
  2. Step 2: Convert to fraction form
    1,128,463.84/1,557,279.94 = 645,039.37/x
  3. Step 3: Cross multiply
    1,128,463.84x = 1,557,279.94 × 645,039.37
  4. Step 4: Simplify right side
    1,128,463.84x = 1,004,506,860,399.64
  5. Step 5: Solve for x
    x = 1,004,506,860,399.64/1,128,463.84
  6. Step 6: Final answer
    x = 890,154.23

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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.