Home / 470,422.91-649,239.28-279,437.06

Finding the Fourth Proportional to 470,422.91, 649,239.28 and 279,437.06

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Solution

The fourth proportional to 470,422.91, 649,239.28 and 279,437.06 is: 385,656.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,422.91 : 649,239.28 = 279,437.06 : x
  2. Step 2: Convert to fraction form
    470,422.91/649,239.28 = 279,437.06/x
  3. Step 3: Cross multiply
    470,422.91x = 649,239.28 × 279,437.06
  4. Step 4: Simplify right side
    470,422.91x = 181,421,516,564.22
  5. Step 5: Solve for x
    x = 181,421,516,564.22/470,422.91
  6. Step 6: Final answer
    x = 385,656.21

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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.