Home / 763,323.20-1,144,984.80-385,409.60

Finding the Fourth Proportional to 763,323.20, 1,144,984.80 and 385,409.60

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Solution

The fourth proportional to 763,323.20, 1,144,984.80 and 385,409.60 is: 578,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,323.20 : 1,144,984.80 = 385,409.60 : x
  2. Step 2: Convert to fraction form
    763,323.20/1,144,984.80 = 385,409.60/x
  3. Step 3: Cross multiply
    763,323.20x = 1,144,984.80 × 385,409.60
  4. Step 4: Simplify right side
    763,323.20x = 441,288,133,774.08
  5. Step 5: Solve for x
    x = 441,288,133,774.08/763,323.20
  6. Step 6: Final answer
    x = 578,114.40

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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.