Home / 771,846,763.34-1,065,147,723.09-419,421,915.68

Finding the Fourth Proportional to 771,846,763.34, 1,065,147,723.09 and 419,421,915.68

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Solution

The fourth proportional to 771,846,763.34, 1,065,147,723.09 and 419,421,915.68 is: 578,801,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,846,763.34 : 1,065,147,723.09 = 419,421,915.68 : x
  2. Step 2: Convert to fraction form
    771,846,763.34/1,065,147,723.09 = 419,421,915.68/x
  3. Step 3: Cross multiply
    771,846,763.34x = 1,065,147,723.09 × 419,421,915.68
  4. Step 4: Simplify right side
    771,846,763.34x = 446,746,298,500,598,016
  5. Step 5: Solve for x
    x = 446,746,298,500,598,016/771,846,763.34
  6. Step 6: Final answer
    x = 578,801,803.31

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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.