Home / 769,406.12-1,153,869.28-289,700.64

Finding the Fourth Proportional to 769,406.12, 1,153,869.28 and 289,700.64

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Solution

The fourth proportional to 769,406.12, 1,153,869.28 and 289,700.64 is: 434,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,406.12 : 1,153,869.28 = 289,700.64 : x
  2. Step 2: Convert to fraction form
    769,406.12/1,153,869.28 = 289,700.64/x
  3. Step 3: Cross multiply
    769,406.12x = 1,153,869.28 × 289,700.64
  4. Step 4: Simplify right side
    769,406.12x = 334,276,668,892.34
  5. Step 5: Solve for x
    x = 334,276,668,892.34/769,406.12
  6. Step 6: Final answer
    x = 434,460.63

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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.