Home / 760,990.47-1,049,661.07-489,401.93

Finding the Fourth Proportional to 760,990.47, 1,049,661.07 and 489,401.93

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Solution

The fourth proportional to 760,990.47, 1,049,661.07 and 489,401.93 is: 675,049.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,990.47 : 1,049,661.07 = 489,401.93 : x
  2. Step 2: Convert to fraction form
    760,990.47/1,049,661.07 = 489,401.93/x
  3. Step 3: Cross multiply
    760,990.47x = 1,049,661.07 × 489,401.93
  4. Step 4: Simplify right side
    760,990.47x = 513,706,147,032.06
  5. Step 5: Solve for x
    x = 513,706,147,032.06/760,990.47
  6. Step 6: Final answer
    x = 675,049.38

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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.