Home / 631,412.56-871,636.14-402,284.08

Finding the Fourth Proportional to 631,412.56, 871,636.14 and 402,284.08

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Solution

The fourth proportional to 631,412.56, 871,636.14 and 402,284.08 is: 555,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,412.56 : 871,636.14 = 402,284.08 : x
  2. Step 2: Convert to fraction form
    631,412.56/871,636.14 = 402,284.08/x
  3. Step 3: Cross multiply
    631,412.56x = 871,636.14 × 402,284.08
  4. Step 4: Simplify right side
    631,412.56x = 350,645,342,674.65
  5. Step 5: Solve for x
    x = 350,645,342,674.65/631,412.56
  6. Step 6: Final answer
    x = 555,334.76

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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.