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Finding the Fourth Proportional to 1,310,344,065.46, 1,808,319,428.65 and 774,954,676.82

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Solution

The fourth proportional to 1,310,344,065.46, 1,808,319,428.65 and 774,954,676.82 is: 1,069,463,841.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,344,065.46 : 1,808,319,428.65 = 774,954,676.82 : x
  2. Step 2: Convert to fraction form
    1,310,344,065.46/1,808,319,428.65 = 774,954,676.82/x
  3. Step 3: Cross multiply
    1,310,344,065.46x = 1,808,319,428.65 × 774,954,676.82
  4. Step 4: Simplify right side
    1,310,344,065.46x = 1,401,365,598,416,787,968
  5. Step 5: Solve for x
    x = 1,401,365,598,416,787,968/1,310,344,065.46
  6. Step 6: Final answer
    x = 1,069,463,841.87

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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.