Home / 989,367.68-1,484,055.84-420,602.24

Finding the Fourth Proportional to 989,367.68, 1,484,055.84 and 420,602.24

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Solution

The fourth proportional to 989,367.68, 1,484,055.84 and 420,602.24 is: 630,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,367.68 : 1,484,055.84 = 420,602.24 : x
  2. Step 2: Convert to fraction form
    989,367.68/1,484,055.84 = 420,602.24/x
  3. Step 3: Cross multiply
    989,367.68x = 1,484,055.84 × 420,602.24
  4. Step 4: Simplify right side
    989,367.68x = 624,197,210,589.08
  5. Step 5: Solve for x
    x = 624,197,210,589.08/989,367.68
  6. Step 6: Final answer
    x = 630,905.20

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Double scale
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Similar ratio
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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.