Home / 1,128,463.34-1,557,279.25-645,038.87

Finding the Fourth Proportional to 1,128,463.34, 1,557,279.25 and 645,038.87

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Solution

The fourth proportional to 1,128,463.34, 1,557,279.25 and 645,038.87 is: 890,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,463.34 : 1,557,279.25 = 645,038.87 : x
  2. Step 2: Convert to fraction form
    1,128,463.34/1,557,279.25 = 645,038.87/x
  3. Step 3: Cross multiply
    1,128,463.34x = 1,557,279.25 × 645,038.87
  4. Step 4: Simplify right side
    1,128,463.34x = 1,004,505,638,295.45
  5. Step 5: Solve for x
    x = 1,004,505,638,295.45/1,128,463.34
  6. Step 6: Final answer
    x = 890,153.55

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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.