Home / 3,118,045.75-4,302,916.10-1,687,261.75

Finding the Fourth Proportional to 3,118,045.75, 4,302,916.10 and 1,687,261.75

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Solution

The fourth proportional to 3,118,045.75, 4,302,916.10 and 1,687,261.75 is: 2,328,428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,045.75 : 4,302,916.10 = 1,687,261.75 : x
  2. Step 2: Convert to fraction form
    3,118,045.75/4,302,916.10 = 1,687,261.75/x
  3. Step 3: Cross multiply
    3,118,045.75x = 4,302,916.10 × 1,687,261.75
  4. Step 4: Simplify right side
    3,118,045.75x = 7,260,145,748,989.18
  5. Step 5: Solve for x
    x = 7,260,145,748,989.18/3,118,045.75
  6. Step 6: Final answer
    x = 2,328,428.23

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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.