Home / 989,368.68-1,484,057.34-420,603.24

Finding the Fourth Proportional to 989,368.68, 1,484,057.34 and 420,603.24

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Solution

The fourth proportional to 989,368.68, 1,484,057.34 and 420,603.24 is: 630,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,368.68 : 1,484,057.34 = 420,603.24 : x
  2. Step 2: Convert to fraction form
    989,368.68/1,484,057.34 = 420,603.24/x
  3. Step 3: Cross multiply
    989,368.68x = 1,484,057.34 × 420,603.24
  4. Step 4: Simplify right side
    989,368.68x = 624,199,325,549.78
  5. Step 5: Solve for x
    x = 624,199,325,549.78/989,368.68
  6. Step 6: Final answer
    x = 630,906.70

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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.