Home / 989,135.20-1,483,702.80-689,953.60

Finding the Fourth Proportional to 989,135.20, 1,483,702.80 and 689,953.60

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Solution

The fourth proportional to 989,135.20, 1,483,702.80 and 689,953.60 is: 1,034,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,135.20 : 1,483,702.80 = 689,953.60 : x
  2. Step 2: Convert to fraction form
    989,135.20/1,483,702.80 = 689,953.60/x
  3. Step 3: Cross multiply
    989,135.20x = 1,483,702.80 × 689,953.60
  4. Step 4: Simplify right side
    989,135.20x = 1,023,686,088,190.08
  5. Step 5: Solve for x
    x = 1,023,686,088,190.08/989,135.20
  6. Step 6: Final answer
    x = 1,034,930.40

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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.