Home / 853,802.58-1,281,570.47-427,643.76

Finding the Fourth Proportional to 853,802.58, 1,281,570.47 and 427,643.76

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Solution

The fourth proportional to 853,802.58, 1,281,570.47 and 427,643.76 is: 641,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,802.58 : 1,281,570.47 = 427,643.76 : x
  2. Step 2: Convert to fraction form
    853,802.58/1,281,570.47 = 427,643.76/x
  3. Step 3: Cross multiply
    853,802.58x = 1,281,570.47 × 427,643.76
  4. Step 4: Simplify right side
    853,802.58x = 548,055,614,495.77
  5. Step 5: Solve for x
    x = 548,055,614,495.77/853,802.58
  6. Step 6: Final answer
    x = 641,899.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.