Home / 645,293,430.30-967,940,145.45-531,919,350.30

Finding the Fourth Proportional to 645,293,430.30, 967,940,145.45 and 531,919,350.30

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Solution

The fourth proportional to 645,293,430.30, 967,940,145.45 and 531,919,350.30 is: 797,879,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,293,430.30 : 967,940,145.45 = 531,919,350.30 : x
  2. Step 2: Convert to fraction form
    645,293,430.30/967,940,145.45 = 531,919,350.30/x
  3. Step 3: Cross multiply
    645,293,430.30x = 967,940,145.45 × 531,919,350.30
  4. Step 4: Simplify right side
    645,293,430.30x = 514,866,093,297,051,520
  5. Step 5: Solve for x
    x = 514,866,093,297,051,520/645,293,430.30
  6. Step 6: Final answer
    x = 797,879,025.45

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Double scale
Find fourth proportional to 645,293,431.30, 967,940,146.95 and 531,919,351.30
Similar ratio
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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.