Home / 626,408.34-864,445.77-339,928.35

Finding the Fourth Proportional to 626,408.34, 864,445.77 and 339,928.35

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Solution

The fourth proportional to 626,408.34, 864,445.77 and 339,928.35 is: 469,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,408.34 : 864,445.77 = 339,928.35 : x
  2. Step 2: Convert to fraction form
    626,408.34/864,445.77 = 339,928.35/x
  3. Step 3: Cross multiply
    626,408.34x = 864,445.77 × 339,928.35
  4. Step 4: Simplify right side
    626,408.34x = 293,849,621,018.91
  5. Step 5: Solve for x
    x = 293,849,621,018.91/626,408.34
  6. Step 6: Final answer
    x = 469,102.35

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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.