Home / 985,809.80-1,478,714.70-424,844.30

Finding the Fourth Proportional to 985,809.80, 1,478,714.70 and 424,844.30

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Solution

The fourth proportional to 985,809.80, 1,478,714.70 and 424,844.30 is: 637,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,809.80 : 1,478,714.70 = 424,844.30 : x
  2. Step 2: Convert to fraction form
    985,809.80/1,478,714.70 = 424,844.30/x
  3. Step 3: Cross multiply
    985,809.80x = 1,478,714.70 × 424,844.30
  4. Step 4: Simplify right side
    985,809.80x = 628,223,511,621.21
  5. Step 5: Solve for x
    x = 628,223,511,621.21/985,809.80
  6. Step 6: Final answer
    x = 637,266.45

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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.