Home / 426,787.52-640,583.04-216,576.32

Finding the Fourth Proportional to 426,787.52, 640,583.04 and 216,576.32

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Solution

The fourth proportional to 426,787.52, 640,583.04 and 216,576.32 is: 325,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,787.52 : 640,583.04 = 216,576.32 : x
  2. Step 2: Convert to fraction form
    426,787.52/640,583.04 = 216,576.32/x
  3. Step 3: Cross multiply
    426,787.52x = 640,583.04 × 216,576.32
  4. Step 4: Simplify right side
    426,787.52x = 138,735,117,457.61
  5. Step 5: Solve for x
    x = 138,735,117,457.61/426,787.52
  6. Step 6: Final answer
    x = 325,068.36

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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.