Home / 879,585,907.65-1,213,852,256.54-517,505,145.05

Finding the Fourth Proportional to 879,585,907.65, 1,213,852,256.54 and 517,505,145.05

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Solution

The fourth proportional to 879,585,907.65, 1,213,852,256.54 and 517,505,145.05 is: 714,171,046.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,585,907.65 : 1,213,852,256.54 = 517,505,145.05 : x
  2. Step 2: Convert to fraction form
    879,585,907.65/1,213,852,256.54 = 517,505,145.05/x
  3. Step 3: Cross multiply
    879,585,907.65x = 1,213,852,256.54 × 517,505,145.05
  4. Step 4: Simplify right side
    879,585,907.65x = 628,174,788,090,002,560
  5. Step 5: Solve for x
    x = 628,174,788,090,002,560/879,585,907.65
  6. Step 6: Final answer
    x = 714,171,046.43

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Double scale
Find fourth proportional to 879,585,908.65, 1,213,852,257.92 and 517,505,146.05
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.