Home / 839,270.74-1,258,009.68-478,665.22

Finding the Fourth Proportional to 839,270.74, 1,258,009.68 and 478,665.22

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Solution

The fourth proportional to 839,270.74, 1,258,009.68 and 478,665.22 is: 717,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,270.74 : 1,258,009.68 = 478,665.22 : x
  2. Step 2: Convert to fraction form
    839,270.74/1,258,009.68 = 478,665.22/x
  3. Step 3: Cross multiply
    839,270.74x = 1,258,009.68 × 478,665.22
  4. Step 4: Simplify right side
    839,270.74x = 602,165,480,239.33
  5. Step 5: Solve for x
    x = 602,165,480,239.33/839,270.74
  6. Step 6: Final answer
    x = 717,486.56

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1.5x scale

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.