Home / 687,916.89-949,293.58-382,012.81

Finding the Fourth Proportional to 687,916.89, 949,293.58 and 382,012.81

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Solution

The fourth proportional to 687,916.89, 949,293.58 and 382,012.81 is: 527,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,916.89 : 949,293.58 = 382,012.81 : x
  2. Step 2: Convert to fraction form
    687,916.89/949,293.58 = 382,012.81/x
  3. Step 3: Cross multiply
    687,916.89x = 949,293.58 × 382,012.81
  4. Step 4: Simplify right side
    687,916.89x = 362,642,306,100.70
  5. Step 5: Solve for x
    x = 362,642,306,100.70/687,916.89
  6. Step 6: Final answer
    x = 527,160.06

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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.