Home / 405,045.29-607,560.40-120,928.47

Finding the Fourth Proportional to 405,045.29, 607,560.40 and 120,928.47

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Solution

The fourth proportional to 405,045.29, 607,560.40 and 120,928.47 is: 181,390.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,045.29 : 607,560.40 = 120,928.47 : x
  2. Step 2: Convert to fraction form
    405,045.29/607,560.40 = 120,928.47/x
  3. Step 3: Cross multiply
    405,045.29x = 607,560.40 × 120,928.47
  4. Step 4: Simplify right side
    405,045.29x = 73,471,348,999.95
  5. Step 5: Solve for x
    x = 73,471,348,999.95/405,045.29
  6. Step 6: Final answer
    x = 181,390.46

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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.