Home / 1,325,509,122.40-1,987,944,818.90-405,393,432.64

Finding the Fourth Proportional to 1,325,509,122.40, 1,987,944,818.90 and 405,393,432.64

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Solution

The fourth proportional to 1,325,509,122.40, 1,987,944,818.90 and 405,393,432.64 is: 607,992,627.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,509,122.40 : 1,987,944,818.90 = 405,393,432.64 : x
  2. Step 2: Convert to fraction form
    1,325,509,122.40/1,987,944,818.90 = 405,393,432.64/x
  3. Step 3: Cross multiply
    1,325,509,122.40x = 1,987,944,818.90 × 405,393,432.64
  4. Step 4: Simplify right side
    1,325,509,122.40x = 805,899,774,032,774,144
  5. Step 5: Solve for x
    x = 805,899,774,032,774,144/1,325,509,122.40
  6. Step 6: Final answer
    x = 607,992,627.45

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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.