Home / 646,429,288-969,780,113.16-209,695,871.20

Finding the Fourth Proportional to 646,429,288, 969,780,113.16 and 209,695,871.20

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Solution

The fourth proportional to 646,429,288, 969,780,113.16 and 209,695,871.20 is: 314,587,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,429,288 : 969,780,113.16 = 209,695,871.20 : x
  2. Step 2: Convert to fraction form
    646,429,288/969,780,113.16 = 209,695,871.20/x
  3. Step 3: Cross multiply
    646,429,288x = 969,780,113.16 × 209,695,871.20
  4. Step 4: Simplify right side
    646,429,288x = 203,358,885,701,520,768
  5. Step 5: Solve for x
    x = 203,358,885,701,520,768/646,429,288
  6. Step 6: Final answer
    x = 314,587,982.75

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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.