Home / 470,412.36-649,272.37-309,282.40

Finding the Fourth Proportional to 470,412.36, 649,272.37 and 309,282.40

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Solution

The fourth proportional to 470,412.36, 649,272.37 and 309,282.40 is: 426,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,412.36 : 649,272.37 = 309,282.40 : x
  2. Step 2: Convert to fraction form
    470,412.36/649,272.37 = 309,282.40/x
  3. Step 3: Cross multiply
    470,412.36x = 649,272.37 × 309,282.40
  4. Step 4: Simplify right side
    470,412.36x = 200,808,515,300.88
  5. Step 5: Solve for x
    x = 200,808,515,300.88/470,412.36
  6. Step 6: Final answer
    x = 426,877.64

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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.