Home / 658,944.18-909,096.21-387,020.70

Finding the Fourth Proportional to 658,944.18, 909,096.21 and 387,020.70

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Solution

The fourth proportional to 658,944.18, 909,096.21 and 387,020.70 is: 533,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,944.18 : 909,096.21 = 387,020.70 : x
  2. Step 2: Convert to fraction form
    658,944.18/909,096.21 = 387,020.70/x
  3. Step 3: Cross multiply
    658,944.18x = 909,096.21 × 387,020.70
  4. Step 4: Simplify right side
    658,944.18x = 351,839,051,561.55
  5. Step 5: Solve for x
    x = 351,839,051,561.55/658,944.18
  6. Step 6: Final answer
    x = 533,943.64

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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.