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Finding the Fourth Proportional to 768,712.76, 1,153,280.52 and 369,687.32

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Solution

The fourth proportional to 768,712.76, 1,153,280.52 and 369,687.32 is: 554,632.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,712.76 : 1,153,280.52 = 369,687.32 : x
  2. Step 2: Convert to fraction form
    768,712.76/1,153,280.52 = 369,687.32/x
  3. Step 3: Cross multiply
    768,712.76x = 1,153,280.52 × 369,687.32
  4. Step 4: Simplify right side
    768,712.76x = 426,353,184,647.01
  5. Step 5: Solve for x
    x = 426,353,184,647.01/768,712.76
  6. Step 6: Final answer
    x = 554,632.64

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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.