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Finding the Fourth Proportional to 488,128.60, 731,415.30 and 362,157.40

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Solution

The fourth proportional to 488,128.60, 731,415.30 and 362,157.40 is: 542,659.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,128.60 : 731,415.30 = 362,157.40 : x
  2. Step 2: Convert to fraction form
    488,128.60/731,415.30 = 362,157.40/x
  3. Step 3: Cross multiply
    488,128.60x = 731,415.30 × 362,157.40
  4. Step 4: Simplify right side
    488,128.60x = 264,887,463,368.22
  5. Step 5: Solve for x
    x = 264,887,463,368.22/488,128.60
  6. Step 6: Final answer
    x = 542,659.17

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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.