Home / 811,021.90-1,119,165.08-448,424.01

Finding the Fourth Proportional to 811,021.90, 1,119,165.08 and 448,424.01

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Solution

The fourth proportional to 811,021.90, 1,119,165.08 and 448,424.01 is: 618,800.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,021.90 : 1,119,165.08 = 448,424.01 : x
  2. Step 2: Convert to fraction form
    811,021.90/1,119,165.08 = 448,424.01/x
  3. Step 3: Cross multiply
    811,021.90x = 1,119,165.08 × 448,424.01
  4. Step 4: Simplify right side
    811,021.90x = 501,860,493,025.57
  5. Step 5: Solve for x
    x = 501,860,493,025.57/811,021.90
  6. Step 6: Final answer
    x = 618,800.17

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1.5x scale

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.