Home / 988,828.20-1,483,631.10-389,687.40

Finding the Fourth Proportional to 988,828.20, 1,483,631.10 and 389,687.40

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Solution

The fourth proportional to 988,828.20, 1,483,631.10 and 389,687.40 is: 584,684.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,828.20 : 1,483,631.10 = 389,687.40 : x
  2. Step 2: Convert to fraction form
    988,828.20/1,483,631.10 = 389,687.40/x
  3. Step 3: Cross multiply
    988,828.20x = 1,483,631.10 × 389,687.40
  4. Step 4: Simplify right side
    988,828.20x = 578,152,345,918.14
  5. Step 5: Solve for x
    x = 578,152,345,918.14/988,828.20
  6. Step 6: Final answer
    x = 584,684.32

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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.