Home / 508,913.20-764,123.10-284,721.40

Finding the Fourth Proportional to 508,913.20, 764,123.10 and 284,721.40

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Solution

The fourth proportional to 508,913.20, 764,123.10 and 284,721.40 is: 427,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,913.20 : 764,123.10 = 284,721.40 : x
  2. Step 2: Convert to fraction form
    508,913.20/764,123.10 = 284,721.40/x
  3. Step 3: Cross multiply
    508,913.20x = 764,123.10 × 284,721.40
  4. Step 4: Simplify right side
    508,913.20x = 217,562,198,804.34
  5. Step 5: Solve for x
    x = 217,562,198,804.34/508,913.20
  6. Step 6: Final answer
    x = 427,503.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.