Home / 687,942.33-949,328.48-382,038.14

Finding the Fourth Proportional to 687,942.33, 949,328.48 and 382,038.14

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Solution

The fourth proportional to 687,942.33, 949,328.48 and 382,038.14 is: 527,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,942.33 : 949,328.48 = 382,038.14 : x
  2. Step 2: Convert to fraction form
    687,942.33/949,328.48 = 382,038.14/x
  3. Step 3: Cross multiply
    687,942.33x = 949,328.48 × 382,038.14
  4. Step 4: Simplify right side
    687,942.33x = 362,679,680,091.39
  5. Step 5: Solve for x
    x = 362,679,680,091.39/687,942.33
  6. Step 6: Final answer
    x = 527,194.89

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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.