Home / 811,317.20-1,119,699.24-448,768.40

Finding the Fourth Proportional to 811,317.20, 1,119,699.24 and 448,768.40

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Solution

The fourth proportional to 811,317.20, 1,119,699.24 and 448,768.40 is: 619,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,317.20 : 1,119,699.24 = 448,768.40 : x
  2. Step 2: Convert to fraction form
    811,317.20/1,119,699.24 = 448,768.40/x
  3. Step 3: Cross multiply
    811,317.20x = 1,119,699.24 × 448,768.40
  4. Step 4: Simplify right side
    811,317.20x = 502,485,636,416.02
  5. Step 5: Solve for x
    x = 502,485,636,416.02/811,317.20
  6. Step 6: Final answer
    x = 619,345.47

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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.