Home / 612,871,624.87-919,301,379.01-280,784,437.23

Finding the Fourth Proportional to 612,871,624.87, 919,301,379.01 and 280,784,437.23

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Solution

The fourth proportional to 612,871,624.87, 919,301,379.01 and 280,784,437.23 is: 421,173,880.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,871,624.87 : 919,301,379.01 = 280,784,437.23 : x
  2. Step 2: Convert to fraction form
    612,871,624.87/919,301,379.01 = 280,784,437.23/x
  3. Step 3: Cross multiply
    612,871,624.87x = 919,301,379.01 × 280,784,437.23
  4. Step 4: Simplify right side
    612,871,624.87x = 258,125,520,352,831,200
  5. Step 5: Solve for x
    x = 258,125,520,352,831,200/612,871,624.87
  6. Step 6: Final answer
    x = 421,173,880.27

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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.