Home / 687,938.40-949,323.06-382,034.22

Finding the Fourth Proportional to 687,938.40, 949,323.06 and 382,034.22

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Solution

The fourth proportional to 687,938.40, 949,323.06 and 382,034.22 is: 527,189.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,938.40 : 949,323.06 = 382,034.22 : x
  2. Step 2: Convert to fraction form
    687,938.40/949,323.06 = 382,034.22/x
  3. Step 3: Cross multiply
    687,938.40x = 949,323.06 × 382,034.22
  4. Step 4: Simplify right side
    687,938.40x = 362,673,894,755.11
  5. Step 5: Solve for x
    x = 362,673,894,755.11/687,938.40
  6. Step 6: Final answer
    x = 527,189.49

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Double scale
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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.