Home / 687,914.89-949,290.81-382,010.81

Finding the Fourth Proportional to 687,914.89, 949,290.81 and 382,010.81

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Solution

The fourth proportional to 687,914.89, 949,290.81 and 382,010.81 is: 527,157.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,914.89 : 949,290.81 = 382,010.81 : x
  2. Step 2: Convert to fraction form
    687,914.89/949,290.81 = 382,010.81/x
  3. Step 3: Cross multiply
    687,914.89x = 949,290.81 × 382,010.81
  4. Step 4: Simplify right side
    687,914.89x = 362,639,350,967.76
  5. Step 5: Solve for x
    x = 362,639,350,967.76/687,914.89
  6. Step 6: Final answer
    x = 527,157.29

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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.