Home / 687,938.90-949,323.75-382,034.72

Finding the Fourth Proportional to 687,938.90, 949,323.75 and 382,034.72

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Solution

The fourth proportional to 687,938.90, 949,323.75 and 382,034.72 is: 527,190.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,938.90 : 949,323.75 = 382,034.72 : x
  2. Step 2: Convert to fraction form
    687,938.90/949,323.75 = 382,034.72/x
  3. Step 3: Cross multiply
    687,938.90x = 949,323.75 × 382,034.72
  4. Step 4: Simplify right side
    687,938.90x = 362,674,633,020.60
  5. Step 5: Solve for x
    x = 362,674,633,020.60/687,938.90
  6. Step 6: Final answer
    x = 527,190.18

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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.