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Finding the Fourth Proportional to 438,701.60, 658,052.40 and 286,486.40

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Solution

The fourth proportional to 438,701.60, 658,052.40 and 286,486.40 is: 429,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,701.60 : 658,052.40 = 286,486.40 : x
  2. Step 2: Convert to fraction form
    438,701.60/658,052.40 = 286,486.40/x
  3. Step 3: Cross multiply
    438,701.60x = 658,052.40 × 286,486.40
  4. Step 4: Simplify right side
    438,701.60x = 188,523,063,087.36
  5. Step 5: Solve for x
    x = 188,523,063,087.36/438,701.60
  6. Step 6: Final answer
    x = 429,729.60

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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.