Home / 638,728,892.40-958,093,338.60-434,655,548.40

Finding the Fourth Proportional to 638,728,892.40, 958,093,338.60 and 434,655,548.40

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Solution

The fourth proportional to 638,728,892.40, 958,093,338.60 and 434,655,548.40 is: 651,983,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,728,892.40 : 958,093,338.60 = 434,655,548.40 : x
  2. Step 2: Convert to fraction form
    638,728,892.40/958,093,338.60 = 434,655,548.40/x
  3. Step 3: Cross multiply
    638,728,892.40x = 958,093,338.60 × 434,655,548.40
  4. Step 4: Simplify right side
    638,728,892.40x = 416,440,585,507,569,856
  5. Step 5: Solve for x
    x = 416,440,585,507,569,856/638,728,892.40
  6. Step 6: Final answer
    x = 651,983,322.60

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1.5x scale

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.