Home / 1,315,280,234.70-1,972,920,352.05-395,036,999.10

Finding the Fourth Proportional to 1,315,280,234.70, 1,972,920,352.05 and 395,036,999.10

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Solution

The fourth proportional to 1,315,280,234.70, 1,972,920,352.05 and 395,036,999.10 is: 592,555,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,280,234.70 : 1,972,920,352.05 = 395,036,999.10 : x
  2. Step 2: Convert to fraction form
    1,315,280,234.70/1,972,920,352.05 = 395,036,999.10/x
  3. Step 3: Cross multiply
    1,315,280,234.70x = 1,972,920,352.05 × 395,036,999.10
  4. Step 4: Simplify right side
    1,315,280,234.70x = 779,376,535,337,147,520
  5. Step 5: Solve for x
    x = 779,376,535,337,147,520/1,315,280,234.70
  6. Step 6: Final answer
    x = 592,555,498.65

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Double scale
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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.