Home / 538,255,066.78-742,792,290.14-290,736,421.03

Finding the Fourth Proportional to 538,255,066.78, 742,792,290.14 and 290,736,421.03

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Solution

The fourth proportional to 538,255,066.78, 742,792,290.14 and 290,736,421.03 is: 401,216,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,255,066.78 : 742,792,290.14 = 290,736,421.03 : x
  2. Step 2: Convert to fraction form
    538,255,066.78/742,792,290.14 = 290,736,421.03/x
  3. Step 3: Cross multiply
    538,255,066.78x = 742,792,290.14 × 290,736,421.03
  4. Step 4: Simplify right side
    538,255,066.78x = 215,956,772,004,000,704
  5. Step 5: Solve for x
    x = 215,956,772,004,000,704/538,255,066.78
  6. Step 6: Final answer
    x = 401,216,421.98

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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.