Home / 678,063.60-1,016,447.40-251,485.20

Finding the Fourth Proportional to 678,063.60, 1,016,447.40 and 251,485.20

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Solution

The fourth proportional to 678,063.60, 1,016,447.40 and 251,485.20 is: 376,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,063.60 : 1,016,447.40 = 251,485.20 : x
  2. Step 2: Convert to fraction form
    678,063.60/1,016,447.40 = 251,485.20/x
  3. Step 3: Cross multiply
    678,063.60x = 1,016,447.40 × 251,485.20
  4. Step 4: Simplify right side
    678,063.60x = 255,621,477,678.48
  5. Step 5: Solve for x
    x = 255,621,477,678.48/678,063.60
  6. Step 6: Final answer
    x = 376,987.47

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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.