Home / 390,482,845.59-538,864,848.63-214,273,789.77

Finding the Fourth Proportional to 390,482,845.59, 538,864,848.63 and 214,273,789.77

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Solution

The fourth proportional to 390,482,845.59, 538,864,848.63 and 214,273,789.77 is: 295,697,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,845.59 : 538,864,848.63 = 214,273,789.77 : x
  2. Step 2: Convert to fraction form
    390,482,845.59/538,864,848.63 = 214,273,789.77/x
  3. Step 3: Cross multiply
    390,482,845.59x = 538,864,848.63 × 214,273,789.77
  4. Step 4: Simplify right side
    390,482,845.59x = 115,464,613,289,787,504
  5. Step 5: Solve for x
    x = 115,464,613,289,787,504/390,482,845.59
  6. Step 6: Final answer
    x = 295,697,018.69

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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.