Home / 673,840,915.30-1,009,965,110.55-285,662,995.30

Finding the Fourth Proportional to 673,840,915.30, 1,009,965,110.55 and 285,662,995.30

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Solution

The fourth proportional to 673,840,915.30, 1,009,965,110.55 and 285,662,995.30 is: 428,156,931.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,840,915.30 : 1,009,965,110.55 = 285,662,995.30 : x
  2. Step 2: Convert to fraction form
    673,840,915.30/1,009,965,110.55 = 285,662,995.30/x
  3. Step 3: Cross multiply
    673,840,915.30x = 1,009,965,110.55 × 285,662,995.30
  4. Step 4: Simplify right side
    673,840,915.30x = 288,509,658,628,208,640
  5. Step 5: Solve for x
    x = 288,509,658,628,208,640/673,840,915.30
  6. Step 6: Final answer
    x = 428,156,931.52

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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.