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Finding the Fourth Proportional to 526,220.80, 788,812.80 and 260,022.40

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Solution

The fourth proportional to 526,220.80, 788,812.80 and 260,022.40 is: 389,777.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,220.80 : 788,812.80 = 260,022.40 : x
  2. Step 2: Convert to fraction form
    526,220.80/788,812.80 = 260,022.40/x
  3. Step 3: Cross multiply
    526,220.80x = 788,812.80 × 260,022.40
  4. Step 4: Simplify right side
    526,220.80x = 205,108,997,406.72
  5. Step 5: Solve for x
    x = 205,108,997,406.72/526,220.80
  6. Step 6: Final answer
    x = 389,777.44

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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.