Home / 1,123,395.68-1,549,907.52-639,618.60

Finding the Fourth Proportional to 1,123,395.68, 1,549,907.52 and 639,618.60

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Solution

The fourth proportional to 1,123,395.68, 1,549,907.52 and 639,618.60 is: 882,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,395.68 : 1,549,907.52 = 639,618.60 : x
  2. Step 2: Convert to fraction form
    1,123,395.68/1,549,907.52 = 639,618.60/x
  3. Step 3: Cross multiply
    1,123,395.68x = 1,549,907.52 × 639,618.60
  4. Step 4: Simplify right side
    1,123,395.68x = 991,349,678,071.87
  5. Step 5: Solve for x
    x = 991,349,678,071.87/1,123,395.68
  6. Step 6: Final answer
    x = 882,458.15

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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.