Home / 989,289.12-1,484,167.60-787,647.68

Finding the Fourth Proportional to 989,289.12, 1,484,167.60 and 787,647.68

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Solution

The fourth proportional to 989,289.12, 1,484,167.60 and 787,647.68 is: 1,181,657.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,289.12 : 1,484,167.60 = 787,647.68 : x
  2. Step 2: Convert to fraction form
    989,289.12/1,484,167.60 = 787,647.68/x
  3. Step 3: Cross multiply
    989,289.12x = 1,484,167.60 × 787,647.68
  4. Step 4: Simplify right side
    989,289.12x = 1,169,001,166,871.17
  5. Step 5: Solve for x
    x = 1,169,001,166,871.17/989,289.12
  6. Step 6: Final answer
    x = 1,181,657.76

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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.