Home / 1,071,539.92-1,478,771.40-641,890

Finding the Fourth Proportional to 1,071,539.92, 1,478,771.40 and 641,890

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Solution

The fourth proportional to 1,071,539.92, 1,478,771.40 and 641,890 is: 885,835.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,539.92 : 1,478,771.40 = 641,890 : x
  2. Step 2: Convert to fraction form
    1,071,539.92/1,478,771.40 = 641,890/x
  3. Step 3: Cross multiply
    1,071,539.92x = 1,478,771.40 × 641,890
  4. Step 4: Simplify right side
    1,071,539.92x = 949,208,573,946
  5. Step 5: Solve for x
    x = 949,208,573,946/1,071,539.92
  6. Step 6: Final answer
    x = 885,835.94

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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.