Home / 398,406,973.80-597,610,460.70-125,742,311.40

Finding the Fourth Proportional to 398,406,973.80, 597,610,460.70 and 125,742,311.40

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Solution

The fourth proportional to 398,406,973.80, 597,610,460.70 and 125,742,311.40 is: 188,613,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,406,973.80 : 597,610,460.70 = 125,742,311.40 : x
  2. Step 2: Convert to fraction form
    398,406,973.80/597,610,460.70 = 125,742,311.40/x
  3. Step 3: Cross multiply
    398,406,973.80x = 597,610,460.70 × 125,742,311.40
  4. Step 4: Simplify right side
    398,406,973.80x = 75,144,920,645,236,864
  5. Step 5: Solve for x
    x = 75,144,920,645,236,864/398,406,973.80
  6. Step 6: Final answer
    x = 188,613,467.10

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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.