Home / 945,821.20-1,418,904.60-384,912.40

Finding the Fourth Proportional to 945,821.20, 1,418,904.60 and 384,912.40

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Solution

The fourth proportional to 945,821.20, 1,418,904.60 and 384,912.40 is: 577,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,821.20 : 1,418,904.60 = 384,912.40 : x
  2. Step 2: Convert to fraction form
    945,821.20/1,418,904.60 = 384,912.40/x
  3. Step 3: Cross multiply
    945,821.20x = 1,418,904.60 × 384,912.40
  4. Step 4: Simplify right side
    945,821.20x = 546,153,974,957.04
  5. Step 5: Solve for x
    x = 546,153,974,957.04/945,821.20
  6. Step 6: Final answer
    x = 577,438.92

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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.