Home / 708,608,467.20-1,062,912,700.80-645,118,982.40

Finding the Fourth Proportional to 708,608,467.20, 1,062,912,700.80 and 645,118,982.40

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Solution

The fourth proportional to 708,608,467.20, 1,062,912,700.80 and 645,118,982.40 is: 967,678,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,608,467.20 : 1,062,912,700.80 = 645,118,982.40 : x
  2. Step 2: Convert to fraction form
    708,608,467.20/1,062,912,700.80 = 645,118,982.40/x
  3. Step 3: Cross multiply
    708,608,467.20x = 1,062,912,700.80 × 645,118,982.40
  4. Step 4: Simplify right side
    708,608,467.20x = 685,705,159,920,131,584
  5. Step 5: Solve for x
    x = 685,705,159,920,131,584/708,608,467.20
  6. Step 6: Final answer
    x = 967,678,473.60

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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.