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Finding the Fourth Proportional to 635,747.60, 953,135.40 and 320,430.80

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Solution

The fourth proportional to 635,747.60, 953,135.40 and 320,430.80 is: 480,401.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,747.60 : 953,135.40 = 320,430.80 : x
  2. Step 2: Convert to fraction form
    635,747.60/953,135.40 = 320,430.80/x
  3. Step 3: Cross multiply
    635,747.60x = 953,135.40 × 320,430.80
  4. Step 4: Simplify right side
    635,747.60x = 305,413,938,730.32
  5. Step 5: Solve for x
    x = 305,413,938,730.32/635,747.60
  6. Step 6: Final answer
    x = 480,401.25

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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.