Home / 2,187,000.77-3,018,062.95-1,220,131.25

Finding the Fourth Proportional to 2,187,000.77, 3,018,062.95 and 1,220,131.25

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Solution

The fourth proportional to 2,187,000.77, 3,018,062.95 and 1,220,131.25 is: 1,683,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,000.77 : 3,018,062.95 = 1,220,131.25 : x
  2. Step 2: Convert to fraction form
    2,187,000.77/3,018,062.95 = 1,220,131.25/x
  3. Step 3: Cross multiply
    2,187,000.77x = 3,018,062.95 × 1,220,131.25
  4. Step 4: Simplify right side
    2,187,000.77x = 3,682,432,913,661.53
  5. Step 5: Solve for x
    x = 3,682,432,913,661.53/2,187,000.77
  6. Step 6: Final answer
    x = 1,683,782.18

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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.