Home / 644,428.10-967,674.90-512,406.20

Finding the Fourth Proportional to 644,428.10, 967,674.90 and 512,406.20

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Solution

The fourth proportional to 644,428.10, 967,674.90 and 512,406.20 is: 769,430.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,428.10 : 967,674.90 = 512,406.20 : x
  2. Step 2: Convert to fraction form
    644,428.10/967,674.90 = 512,406.20/x
  3. Step 3: Cross multiply
    644,428.10x = 967,674.90 × 512,406.20
  4. Step 4: Simplify right side
    644,428.10x = 495,842,618,344.38
  5. Step 5: Solve for x
    x = 495,842,618,344.38/644,428.10
  6. Step 6: Final answer
    x = 769,430.47

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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.