Home / 402,409,241.40-603,613,862.10-387,103,740.60

Finding the Fourth Proportional to 402,409,241.40, 603,613,862.10 and 387,103,740.60

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Solution

The fourth proportional to 402,409,241.40, 603,613,862.10 and 387,103,740.60 is: 580,655,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,409,241.40 : 603,613,862.10 = 387,103,740.60 : x
  2. Step 2: Convert to fraction form
    402,409,241.40/603,613,862.10 = 387,103,740.60/x
  3. Step 3: Cross multiply
    402,409,241.40x = 603,613,862.10 × 387,103,740.60
  4. Step 4: Simplify right side
    402,409,241.40x = 233,661,183,896,922,592
  5. Step 5: Solve for x
    x = 233,661,183,896,922,592/402,409,241.40
  6. Step 6: Final answer
    x = 580,655,610.90

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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.