Home / 989,305.42-1,484,065.77-315,228.28

Finding the Fourth Proportional to 989,305.42, 1,484,065.77 and 315,228.28

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Solution

The fourth proportional to 989,305.42, 1,484,065.77 and 315,228.28 is: 472,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,305.42 : 1,484,065.77 = 315,228.28 : x
  2. Step 2: Convert to fraction form
    989,305.42/1,484,065.77 = 315,228.28/x
  3. Step 3: Cross multiply
    989,305.42x = 1,484,065.77 × 315,228.28
  4. Step 4: Simplify right side
    989,305.42x = 467,819,500,083.98
  5. Step 5: Solve for x
    x = 467,819,500,083.98/989,305.42
  6. Step 6: Final answer
    x = 472,876.72

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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.