Home / 646,880.70-892,089.90-511,238.72

Finding the Fourth Proportional to 646,880.70, 892,089.90 and 511,238.72

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Solution

The fourth proportional to 646,880.70, 892,089.90 and 511,238.72 is: 705,030.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,880.70 : 892,089.90 = 511,238.72 : x
  2. Step 2: Convert to fraction form
    646,880.70/892,089.90 = 511,238.72/x
  3. Step 3: Cross multiply
    646,880.70x = 892,089.90 × 511,238.72
  4. Step 4: Simplify right side
    646,880.70x = 456,070,894,140.48
  5. Step 5: Solve for x
    x = 456,070,894,140.48/646,880.70
  6. Step 6: Final answer
    x = 705,030.92

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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.