Home / 877,120.31-1,210,412.94-489,941.12

Finding the Fourth Proportional to 877,120.31, 1,210,412.94 and 489,941.12

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Solution

The fourth proportional to 877,120.31, 1,210,412.94 and 489,941.12 is: 676,111.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,120.31 : 1,210,412.94 = 489,941.12 : x
  2. Step 2: Convert to fraction form
    877,120.31/1,210,412.94 = 489,941.12/x
  3. Step 3: Cross multiply
    877,120.31x = 1,210,412.94 × 489,941.12
  4. Step 4: Simplify right side
    877,120.31x = 593,031,071,486.09
  5. Step 5: Solve for x
    x = 593,031,071,486.09/877,120.31
  6. Step 6: Final answer
    x = 676,111.44

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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.