Home / 538,120,718.19-742,606,583.72-290,602,065.15

Finding the Fourth Proportional to 538,120,718.19, 742,606,583.72 and 290,602,065.15

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Solution

The fourth proportional to 538,120,718.19, 742,606,583.72 and 290,602,065.15 is: 401,030,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,120,718.19 : 742,606,583.72 = 290,602,065.15 : x
  2. Step 2: Convert to fraction form
    538,120,718.19/742,606,583.72 = 290,602,065.15/x
  3. Step 3: Cross multiply
    538,120,718.19x = 742,606,583.72 × 290,602,065.15
  4. Step 4: Simplify right side
    538,120,718.19x = 215,803,006,821,565,344
  5. Step 5: Solve for x
    x = 215,803,006,821,565,344/538,120,718.19
  6. Step 6: Final answer
    x = 401,030,845.92

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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.