Home / 418,915.10-578,145.66-246,886.58

Finding the Fourth Proportional to 418,915.10, 578,145.66 and 246,886.58

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Solution

The fourth proportional to 418,915.10, 578,145.66 and 246,886.58 is: 340,728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,915.10 : 578,145.66 = 246,886.58 : x
  2. Step 2: Convert to fraction form
    418,915.10/578,145.66 = 246,886.58/x
  3. Step 3: Cross multiply
    418,915.10x = 578,145.66 × 246,886.58
  4. Step 4: Simplify right side
    418,915.10x = 142,736,404,739.24
  5. Step 5: Solve for x
    x = 142,736,404,739.24/418,915.10
  6. Step 6: Final answer
    x = 340,728.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.