Home / 947,715.20-1,421,054.40-386,115.20

Finding the Fourth Proportional to 947,715.20, 1,421,054.40 and 386,115.20

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Solution

The fourth proportional to 947,715.20, 1,421,054.40 and 386,115.20 is: 578,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,715.20 : 1,421,054.40 = 386,115.20 : x
  2. Step 2: Convert to fraction form
    947,715.20/1,421,054.40 = 386,115.20/x
  3. Step 3: Cross multiply
    947,715.20x = 1,421,054.40 × 386,115.20
  4. Step 4: Simplify right side
    947,715.20x = 548,690,703,866.88
  5. Step 5: Solve for x
    x = 548,690,703,866.88/947,715.20
  6. Step 6: Final answer
    x = 578,961.60

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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.