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Finding the Fourth Proportional to 572,137.40, 789,460.34 and 330,373.46

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Solution

The fourth proportional to 572,137.40, 789,460.34 and 330,373.46 is: 455,863.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,137.40 : 789,460.34 = 330,373.46 : x
  2. Step 2: Convert to fraction form
    572,137.40/789,460.34 = 330,373.46/x
  3. Step 3: Cross multiply
    572,137.40x = 789,460.34 × 330,373.46
  4. Step 4: Simplify right side
    572,137.40x = 260,816,744,058.58
  5. Step 5: Solve for x
    x = 260,816,744,058.58/572,137.40
  6. Step 6: Final answer
    x = 455,863.83

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Double scale
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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.