Home / 630,435,430.40-945,653,145.60-388,570,726.40

Finding the Fourth Proportional to 630,435,430.40, 945,653,145.60 and 388,570,726.40

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Solution

The fourth proportional to 630,435,430.40, 945,653,145.60 and 388,570,726.40 is: 582,856,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,435,430.40 : 945,653,145.60 = 388,570,726.40 : x
  2. Step 2: Convert to fraction form
    630,435,430.40/945,653,145.60 = 388,570,726.40/x
  3. Step 3: Cross multiply
    630,435,430.40x = 945,653,145.60 × 388,570,726.40
  4. Step 4: Simplify right side
    630,435,430.40x = 367,453,129,708,236,928
  5. Step 5: Solve for x
    x = 367,453,129,708,236,928/630,435,430.40
  6. Step 6: Final answer
    x = 582,856,089.60

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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.