Home / 419,905,145.40-629,857,718.10-370,587,420.60

Finding the Fourth Proportional to 419,905,145.40, 629,857,718.10 and 370,587,420.60

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Solution

The fourth proportional to 419,905,145.40, 629,857,718.10 and 370,587,420.60 is: 555,881,130.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,145.40 : 629,857,718.10 = 370,587,420.60 : x
  2. Step 2: Convert to fraction form
    419,905,145.40/629,857,718.10 = 370,587,420.60/x
  3. Step 3: Cross multiply
    419,905,145.40x = 629,857,718.10 × 370,587,420.60
  4. Step 4: Simplify right side
    419,905,145.40x = 233,417,347,095,680,960
  5. Step 5: Solve for x
    x = 233,417,347,095,680,960/419,905,145.40
  6. Step 6: Final answer
    x = 555,881,130.90

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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.