Home / 761,856,002.40-1,142,784,003.60-398,461,749.60

Finding the Fourth Proportional to 761,856,002.40, 1,142,784,003.60 and 398,461,749.60

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Solution

The fourth proportional to 761,856,002.40, 1,142,784,003.60 and 398,461,749.60 is: 597,692,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,856,002.40 : 1,142,784,003.60 = 398,461,749.60 : x
  2. Step 2: Convert to fraction form
    761,856,002.40/1,142,784,003.60 = 398,461,749.60/x
  3. Step 3: Cross multiply
    761,856,002.40x = 1,142,784,003.60 × 398,461,749.60
  4. Step 4: Simplify right side
    761,856,002.40x = 455,355,713,489,348,672
  5. Step 5: Solve for x
    x = 455,355,713,489,348,672/761,856,002.40
  6. Step 6: Final answer
    x = 597,692,624.40

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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.