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Finding the Fourth Proportional to 647,453,093.40, 971,179,640.10 and 579,428,645.40

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Solution

The fourth proportional to 647,453,093.40, 971,179,640.10 and 579,428,645.40 is: 869,142,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,453,093.40 : 971,179,640.10 = 579,428,645.40 : x
  2. Step 2: Convert to fraction form
    647,453,093.40/971,179,640.10 = 579,428,645.40/x
  3. Step 3: Cross multiply
    647,453,093.40x = 971,179,640.10 × 579,428,645.40
  4. Step 4: Simplify right side
    647,453,093.40x = 562,729,303,303,202,496
  5. Step 5: Solve for x
    x = 562,729,303,303,202,496/647,453,093.40
  6. Step 6: Final answer
    x = 869,142,968.10

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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.