Home / 877,170.86-1,210,366.95-489,938.56

Finding the Fourth Proportional to 877,170.86, 1,210,366.95 and 489,938.56

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Solution

The fourth proportional to 877,170.86, 1,210,366.95 and 489,938.56 is: 676,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,170.86 : 1,210,366.95 = 489,938.56 : x
  2. Step 2: Convert to fraction form
    877,170.86/1,210,366.95 = 489,938.56/x
  3. Step 3: Cross multiply
    877,170.86x = 1,210,366.95 × 489,938.56
  4. Step 4: Simplify right side
    877,170.86x = 593,005,435,691.41
  5. Step 5: Solve for x
    x = 593,005,435,691.41/877,170.86
  6. Step 6: Final answer
    x = 676,043.25

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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.