Home / 419,905,125.60-629,857,688.40-392,695,346.40

Finding the Fourth Proportional to 419,905,125.60, 629,857,688.40 and 392,695,346.40

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Solution

The fourth proportional to 419,905,125.60, 629,857,688.40 and 392,695,346.40 is: 589,043,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,125.60 : 629,857,688.40 = 392,695,346.40 : x
  2. Step 2: Convert to fraction form
    419,905,125.60/629,857,688.40 = 392,695,346.40/x
  3. Step 3: Cross multiply
    419,905,125.60x = 629,857,688.40 × 392,695,346.40
  4. Step 4: Simplify right side
    419,905,125.60x = 247,342,183,128,941,248
  5. Step 5: Solve for x
    x = 247,342,183,128,941,248/419,905,125.60
  6. Step 6: Final answer
    x = 589,043,019.60

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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.