Home / 1,243,329,351.10-1,715,785,621.00-678,814,214.22

Finding the Fourth Proportional to 1,243,329,351.10, 1,715,785,621.00 and 678,814,214.22

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Solution

The fourth proportional to 1,243,329,351.10, 1,715,785,621.00 and 678,814,214.22 is: 936,758,765.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,329,351.10 : 1,715,785,621.00 = 678,814,214.22 : x
  2. Step 2: Convert to fraction form
    1,243,329,351.10/1,715,785,621.00 = 678,814,214.22/x
  3. Step 3: Cross multiply
    1,243,329,351.10x = 1,715,785,621.00 × 678,814,214.22
  4. Step 4: Simplify right side
    1,243,329,351.10x = 1,164,699,668,087,392,768
  5. Step 5: Solve for x
    x = 1,164,699,668,087,392,768/1,243,329,351.10
  6. Step 6: Final answer
    x = 936,758,765.53

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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.