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Finding the Fourth Proportional to 545,431.36, 752,495.52 and 330,416.32

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Solution

The fourth proportional to 545,431.36, 752,495.52 and 330,416.32 is: 455,853.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,431.36 : 752,495.52 = 330,416.32 : x
  2. Step 2: Convert to fraction form
    545,431.36/752,495.52 = 330,416.32/x
  3. Step 3: Cross multiply
    545,431.36x = 752,495.52 × 330,416.32
  4. Step 4: Simplify right side
    545,431.36x = 248,636,800,534.89
  5. Step 5: Solve for x
    x = 248,636,800,534.89/545,431.36
  6. Step 6: Final answer
    x = 455,853.51

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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.