Home / 989,812.70-1,484,719.05-740,980.70

Finding the Fourth Proportional to 989,812.70, 1,484,719.05 and 740,980.70

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Solution

The fourth proportional to 989,812.70, 1,484,719.05 and 740,980.70 is: 1,111,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,812.70 : 1,484,719.05 = 740,980.70 : x
  2. Step 2: Convert to fraction form
    989,812.70/1,484,719.05 = 740,980.70/x
  3. Step 3: Cross multiply
    989,812.70x = 1,484,719.05 × 740,980.70
  4. Step 4: Simplify right side
    989,812.70x = 1,100,148,160,972.34
  5. Step 5: Solve for x
    x = 1,100,148,160,972.34/989,812.70
  6. Step 6: Final answer
    x = 1,111,471.05

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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.