Home / 639,509,397.35-957,753,020.51-312,209,055.59

Finding the Fourth Proportional to 639,509,397.35, 957,753,020.51 and 312,209,055.59

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Solution

The fourth proportional to 639,509,397.35, 957,753,020.51 and 312,209,055.59 is: 467,575,874.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,509,397.35 : 957,753,020.51 = 312,209,055.59 : x
  2. Step 2: Convert to fraction form
    639,509,397.35/957,753,020.51 = 312,209,055.59/x
  3. Step 3: Cross multiply
    639,509,397.35x = 957,753,020.51 × 312,209,055.59
  4. Step 4: Simplify right side
    639,509,397.35x = 299,019,166,020,335,936
  5. Step 5: Solve for x
    x = 299,019,166,020,335,936/639,509,397.35
  6. Step 6: Final answer
    x = 467,575,874.97

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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.