Home / 314,928,239.40-472,392,359.10-289,985,941.80

Finding the Fourth Proportional to 314,928,239.40, 472,392,359.10 and 289,985,941.80

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Solution

The fourth proportional to 314,928,239.40, 472,392,359.10 and 289,985,941.80 is: 434,978,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,239.40 : 472,392,359.10 = 289,985,941.80 : x
  2. Step 2: Convert to fraction form
    314,928,239.40/472,392,359.10 = 289,985,941.80/x
  3. Step 3: Cross multiply
    314,928,239.40x = 472,392,359.10 × 289,985,941.80
  4. Step 4: Simplify right side
    314,928,239.40x = 136,987,143,152,737,312
  5. Step 5: Solve for x
    x = 136,987,143,152,737,312/314,928,239.40
  6. Step 6: Final answer
    x = 434,978,912.70

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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.