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Finding the Fourth Proportional to 432,034.90, 648,052.35 and 405,790.90

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Solution

The fourth proportional to 432,034.90, 648,052.35 and 405,790.90 is: 608,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,034.90 : 648,052.35 = 405,790.90 : x
  2. Step 2: Convert to fraction form
    432,034.90/648,052.35 = 405,790.90/x
  3. Step 3: Cross multiply
    432,034.90x = 648,052.35 × 405,790.90
  4. Step 4: Simplify right side
    432,034.90x = 262,973,746,353.62
  5. Step 5: Solve for x
    x = 262,973,746,353.62/432,034.90
  6. Step 6: Final answer
    x = 608,686.35

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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.