Home / 989,172.30-1,483,730.64-315,294.03

Finding the Fourth Proportional to 989,172.30, 1,483,730.64 and 315,294.03

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Solution

The fourth proportional to 989,172.30, 1,483,730.64 and 315,294.03 is: 472,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,172.30 : 1,483,730.64 = 315,294.03 : x
  2. Step 2: Convert to fraction form
    989,172.30/1,483,730.64 = 315,294.03/x
  3. Step 3: Cross multiply
    989,172.30x = 1,483,730.64 × 315,294.03
  4. Step 4: Simplify right side
    989,172.30x = 467,811,412,920.08
  5. Step 5: Solve for x
    x = 467,811,412,920.08/989,172.30
  6. Step 6: Final answer
    x = 472,932.18

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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.