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Finding the Fourth Proportional to 526,626.40, 788,603.10 and 289,701.40

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Solution

The fourth proportional to 526,626.40, 788,603.10 and 289,701.40 is: 433,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,626.40 : 788,603.10 = 289,701.40 : x
  2. Step 2: Convert to fraction form
    526,626.40/788,603.10 = 289,701.40/x
  3. Step 3: Cross multiply
    526,626.40x = 788,603.10 × 289,701.40
  4. Step 4: Simplify right side
    526,626.40x = 228,459,422,114.34
  5. Step 5: Solve for x
    x = 228,459,422,114.34/526,626.40
  6. Step 6: Final answer
    x = 433,816.88

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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.