Home / 404,427.77-604,272.57-390,284.11

Finding the Fourth Proportional to 404,427.77, 604,272.57 and 390,284.11

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Solution

The fourth proportional to 404,427.77, 604,272.57 and 390,284.11 is: 583,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,427.77 : 604,272.57 = 390,284.11 : x
  2. Step 2: Convert to fraction form
    404,427.77/604,272.57 = 390,284.11/x
  3. Step 3: Cross multiply
    404,427.77x = 604,272.57 × 390,284.11
  4. Step 4: Simplify right side
    404,427.77x = 235,837,982,179.86
  5. Step 5: Solve for x
    x = 235,837,982,179.86/404,427.77
  6. Step 6: Final answer
    x = 583,139.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.