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Finding the Fourth Proportional to 768,120.07, 1,059,710.06 and 481,140.55

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Solution

The fourth proportional to 768,120.07, 1,059,710.06 and 481,140.55 is: 663,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,120.07 : 1,059,710.06 = 481,140.55 : x
  2. Step 2: Convert to fraction form
    768,120.07/1,059,710.06 = 481,140.55/x
  3. Step 3: Cross multiply
    768,120.07x = 1,059,710.06 × 481,140.55
  4. Step 4: Simplify right side
    768,120.07x = 509,869,478,703.23
  5. Step 5: Solve for x
    x = 509,869,478,703.23/768,120.07
  6. Step 6: Final answer
    x = 663,788.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.