Home / 638,858,240.63-881,632,938.14-360,398,903.03

Finding the Fourth Proportional to 638,858,240.63, 881,632,938.14 and 360,398,903.03

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Solution

The fourth proportional to 638,858,240.63, 881,632,938.14 and 360,398,903.03 is: 497,355,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,858,240.63 : 881,632,938.14 = 360,398,903.03 : x
  2. Step 2: Convert to fraction form
    638,858,240.63/881,632,938.14 = 360,398,903.03/x
  3. Step 3: Cross multiply
    638,858,240.63x = 881,632,938.14 × 360,398,903.03
  4. Step 4: Simplify right side
    638,858,240.63x = 317,739,543,774,561,664
  5. Step 5: Solve for x
    x = 317,739,543,774,561,664/638,858,240.63
  6. Step 6: Final answer
    x = 497,355,318.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.