Home / 989,010.51-1,484,124.89-389,869.71

Finding the Fourth Proportional to 989,010.51, 1,484,124.89 and 389,869.71

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Solution

The fourth proportional to 989,010.51, 1,484,124.89 and 389,869.71 is: 585,044.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,010.51 : 1,484,124.89 = 389,869.71 : x
  2. Step 2: Convert to fraction form
    989,010.51/1,484,124.89 = 389,869.71/x
  3. Step 3: Cross multiply
    989,010.51x = 1,484,124.89 × 389,869.71
  4. Step 4: Simplify right side
    989,010.51x = 578,615,338,518.73
  5. Step 5: Solve for x
    x = 578,615,338,518.73/989,010.51
  6. Step 6: Final answer
    x = 585,044.68

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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.