Home / 428,742,065.07-643,117,048.79-122,034,094.11

Finding the Fourth Proportional to 428,742,065.07, 643,117,048.79 and 122,034,094.11

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Solution

The fourth proportional to 428,742,065.07, 643,117,048.79 and 122,034,094.11 is: 183,052,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,742,065.07 : 643,117,048.79 = 122,034,094.11 : x
  2. Step 2: Convert to fraction form
    428,742,065.07/643,117,048.79 = 122,034,094.11/x
  3. Step 3: Cross multiply
    428,742,065.07x = 643,117,048.79 × 122,034,094.11
  4. Step 4: Simplify right side
    428,742,065.07x = 78,482,206,455,174,144
  5. Step 5: Solve for x
    x = 78,482,206,455,174,144/428,742,065.07
  6. Step 6: Final answer
    x = 183,052,265.80

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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.