Home / 947,687.20-1,421,012.40-386,087.20

Finding the Fourth Proportional to 947,687.20, 1,421,012.40 and 386,087.20

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Solution

The fourth proportional to 947,687.20, 1,421,012.40 and 386,087.20 is: 578,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,687.20 : 1,421,012.40 = 386,087.20 : x
  2. Step 2: Convert to fraction form
    947,687.20/1,421,012.40 = 386,087.20/x
  3. Step 3: Cross multiply
    947,687.20x = 1,421,012.40 × 386,087.20
  4. Step 4: Simplify right side
    947,687.20x = 548,634,698,681.28
  5. Step 5: Solve for x
    x = 548,634,698,681.28/947,687.20
  6. Step 6: Final answer
    x = 578,919.60

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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.