Home / 811,911.98-1,121,509.48-623,256.62

Finding the Fourth Proportional to 811,911.98, 1,121,509.48 and 623,256.62

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Solution

The fourth proportional to 811,911.98, 1,121,509.48 and 623,256.62 is: 860,916.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,911.98 : 1,121,509.48 = 623,256.62 : x
  2. Step 2: Convert to fraction form
    811,911.98/1,121,509.48 = 623,256.62/x
  3. Step 3: Cross multiply
    811,911.98x = 1,121,509.48 × 623,256.62
  4. Step 4: Simplify right side
    811,911.98x = 698,988,207,802.76
  5. Step 5: Solve for x
    x = 698,988,207,802.76/811,911.98
  6. Step 6: Final answer
    x = 860,916.24

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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.