Home / 877,171.90-1,210,368.38-489,939.61

Finding the Fourth Proportional to 877,171.90, 1,210,368.38 and 489,939.61

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Solution

The fourth proportional to 877,171.90, 1,210,368.38 and 489,939.61 is: 676,044.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,171.90 : 1,210,368.38 = 489,939.61 : x
  2. Step 2: Convert to fraction form
    877,171.90/1,210,368.38 = 489,939.61/x
  3. Step 3: Cross multiply
    877,171.90x = 1,210,368.38 × 489,939.61
  4. Step 4: Simplify right side
    877,171.90x = 593,007,403,551.99
  5. Step 5: Solve for x
    x = 593,007,403,551.99/877,171.90
  6. Step 6: Final answer
    x = 676,044.69

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1.5x scale

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.