Home / 644,688.10-968,064.90-512,666.20

Finding the Fourth Proportional to 644,688.10, 968,064.90 and 512,666.20

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Solution

The fourth proportional to 644,688.10, 968,064.90 and 512,666.20 is: 769,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,688.10 : 968,064.90 = 512,666.20 : x
  2. Step 2: Convert to fraction form
    644,688.10/968,064.90 = 512,666.20/x
  3. Step 3: Cross multiply
    644,688.10x = 968,064.90 × 512,666.20
  4. Step 4: Simplify right side
    644,688.10x = 496,294,153,636.38
  5. Step 5: Solve for x
    x = 496,294,153,636.38/644,688.10
  6. Step 6: Final answer
    x = 769,820.56

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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.