Home / 1,289,442.30-1,934,163.45-402,978.30

Finding the Fourth Proportional to 1,289,442.30, 1,934,163.45 and 402,978.30

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Solution

The fourth proportional to 1,289,442.30, 1,934,163.45 and 402,978.30 is: 604,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,442.30 : 1,934,163.45 = 402,978.30 : x
  2. Step 2: Convert to fraction form
    1,289,442.30/1,934,163.45 = 402,978.30/x
  3. Step 3: Cross multiply
    1,289,442.30x = 1,934,163.45 × 402,978.30
  4. Step 4: Simplify right side
    1,289,442.30x = 779,425,899,003.14
  5. Step 5: Solve for x
    x = 779,425,899,003.14/1,289,442.30
  6. Step 6: Final answer
    x = 604,467.45

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Double scale
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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.