Home / 811,314.29-1,119,515.40-448,688.76

Finding the Fourth Proportional to 811,314.29, 1,119,515.40 and 448,688.76

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Solution

The fourth proportional to 811,314.29, 1,119,515.40 and 448,688.76 is: 619,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,314.29 : 1,119,515.40 = 448,688.76 : x
  2. Step 2: Convert to fraction form
    811,314.29/1,119,515.40 = 448,688.76/x
  3. Step 3: Cross multiply
    811,314.29x = 1,119,515.40 × 448,688.76
  4. Step 4: Simplify right side
    811,314.29x = 502,313,976,626.90
  5. Step 5: Solve for x
    x = 502,313,976,626.90/811,314.29
  6. Step 6: Final answer
    x = 619,136.12

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Double scale
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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.