Home / 432,023.40-648,035.10-290,305.80

Finding the Fourth Proportional to 432,023.40, 648,035.10 and 290,305.80

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Solution

The fourth proportional to 432,023.40, 648,035.10 and 290,305.80 is: 435,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,023.40 : 648,035.10 = 290,305.80 : x
  2. Step 2: Convert to fraction form
    432,023.40/648,035.10 = 290,305.80/x
  3. Step 3: Cross multiply
    432,023.40x = 648,035.10 × 290,305.80
  4. Step 4: Simplify right side
    432,023.40x = 188,128,348,133.58
  5. Step 5: Solve for x
    x = 188,128,348,133.58/432,023.40
  6. Step 6: Final answer
    x = 435,458.70

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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.