Home / 1,038,856.78-1,558,329.72-407,907.28

Finding the Fourth Proportional to 1,038,856.78, 1,558,329.72 and 407,907.28

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Solution

The fourth proportional to 1,038,856.78, 1,558,329.72 and 407,907.28 is: 611,878.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,856.78 : 1,558,329.72 = 407,907.28 : x
  2. Step 2: Convert to fraction form
    1,038,856.78/1,558,329.72 = 407,907.28/x
  3. Step 3: Cross multiply
    1,038,856.78x = 1,558,329.72 × 407,907.28
  4. Step 4: Simplify right side
    1,038,856.78x = 635,654,037,428.36
  5. Step 5: Solve for x
    x = 635,654,037,428.36/1,038,856.78
  6. Step 6: Final answer
    x = 611,878.41

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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.