Home / 1,435,782.09-1,981,353.75-782,413.80

Finding the Fourth Proportional to 1,435,782.09, 1,981,353.75 and 782,413.80

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Solution

The fourth proportional to 1,435,782.09, 1,981,353.75 and 782,413.80 is: 1,079,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435,782.09 : 1,981,353.75 = 782,413.80 : x
  2. Step 2: Convert to fraction form
    1,435,782.09/1,981,353.75 = 782,413.80/x
  3. Step 3: Cross multiply
    1,435,782.09x = 1,981,353.75 × 782,413.80
  4. Step 4: Simplify right side
    1,435,782.09x = 1,550,238,516,681.75
  5. Step 5: Solve for x
    x = 1,550,238,516,681.75/1,435,782.09
  6. Step 6: Final answer
    x = 1,079,717.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.