Home / 920,334.49-1,380,564.81-312,875.60

Finding the Fourth Proportional to 920,334.49, 1,380,564.81 and 312,875.60

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Solution

The fourth proportional to 920,334.49, 1,380,564.81 and 312,875.60 is: 469,334.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,334.49 : 1,380,564.81 = 312,875.60 : x
  2. Step 2: Convert to fraction form
    920,334.49/1,380,564.81 = 312,875.60/x
  3. Step 3: Cross multiply
    920,334.49x = 1,380,564.81 × 312,875.60
  4. Step 4: Simplify right side
    920,334.49x = 431,945,036,364.81
  5. Step 5: Solve for x
    x = 431,945,036,364.81/920,334.49
  6. Step 6: Final answer
    x = 469,334.84

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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.