Home / 989,403.60-1,484,105.40-646,919.40

Finding the Fourth Proportional to 989,403.60, 1,484,105.40 and 646,919.40

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Solution

The fourth proportional to 989,403.60, 1,484,105.40 and 646,919.40 is: 970,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,403.60 : 1,484,105.40 = 646,919.40 : x
  2. Step 2: Convert to fraction form
    989,403.60/1,484,105.40 = 646,919.40/x
  3. Step 3: Cross multiply
    989,403.60x = 1,484,105.40 × 646,919.40
  4. Step 4: Simplify right side
    989,403.60x = 960,096,574,904.76
  5. Step 5: Solve for x
    x = 960,096,574,904.76/989,403.60
  6. Step 6: Final answer
    x = 970,379.10

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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.