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Finding the Fourth Proportional to 510,577.20, 765,865.80 and 455,464.80

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Solution

The fourth proportional to 510,577.20, 765,865.80 and 455,464.80 is: 683,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,577.20 : 765,865.80 = 455,464.80 : x
  2. Step 2: Convert to fraction form
    510,577.20/765,865.80 = 455,464.80/x
  3. Step 3: Cross multiply
    510,577.20x = 765,865.80 × 455,464.80
  4. Step 4: Simplify right side
    510,577.20x = 348,824,913,423.84
  5. Step 5: Solve for x
    x = 348,824,913,423.84/510,577.20
  6. Step 6: Final answer
    x = 683,197.20

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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.