Home / 644,037.85-970,686.05-555,153.39

Finding the Fourth Proportional to 644,037.85, 970,686.05 and 555,153.39

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Solution

The fourth proportional to 644,037.85, 970,686.05 and 555,153.39 is: 836,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,037.85 : 970,686.05 = 555,153.39 : x
  2. Step 2: Convert to fraction form
    644,037.85/970,686.05 = 555,153.39/x
  3. Step 3: Cross multiply
    644,037.85x = 970,686.05 × 555,153.39
  4. Step 4: Simplify right side
    644,037.85x = 538,879,651,283.21
  5. Step 5: Solve for x
    x = 538,879,651,283.21/644,037.85
  6. Step 6: Final answer
    x = 836,720.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.