Home / 919,541.79-1,379,946.96-320,507.91

Finding the Fourth Proportional to 919,541.79, 1,379,946.96 and 320,507.91

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Solution

The fourth proportional to 919,541.79, 1,379,946.96 and 320,507.91 is: 480,982.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,541.79 : 1,379,946.96 = 320,507.91 : x
  2. Step 2: Convert to fraction form
    919,541.79/1,379,946.96 = 320,507.91/x
  3. Step 3: Cross multiply
    919,541.79x = 1,379,946.96 × 320,507.91
  4. Step 4: Simplify right side
    919,541.79x = 442,283,916,060.45
  5. Step 5: Solve for x
    x = 442,283,916,060.45/919,541.79
  6. Step 6: Final answer
    x = 480,982.94

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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.