Home / 438,449,439.38-657,477,590.69-261,270,143.06

Finding the Fourth Proportional to 438,449,439.38, 657,477,590.69 and 261,270,143.06

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Solution

The fourth proportional to 438,449,439.38, 657,477,590.69 and 261,270,143.06 is: 391,788,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,449,439.38 : 657,477,590.69 = 261,270,143.06 : x
  2. Step 2: Convert to fraction form
    438,449,439.38/657,477,590.69 = 261,270,143.06/x
  3. Step 3: Cross multiply
    438,449,439.38x = 657,477,590.69 × 261,270,143.06
  4. Step 4: Simplify right side
    438,449,439.38x = 171,779,264,175,686,208
  5. Step 5: Solve for x
    x = 171,779,264,175,686,208/438,449,439.38
  6. Step 6: Final answer
    x = 391,788,080.33

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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.