Home / 643,862,062.60-889,119,931.70-408,988,396.04

Finding the Fourth Proportional to 643,862,062.60, 889,119,931.70 and 408,988,396.04

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Solution

The fourth proportional to 643,862,062.60, 889,119,931.70 and 408,988,396.04 is: 564,778,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,862,062.60 : 889,119,931.70 = 408,988,396.04 : x
  2. Step 2: Convert to fraction form
    643,862,062.60/889,119,931.70 = 408,988,396.04/x
  3. Step 3: Cross multiply
    643,862,062.60x = 889,119,931.70 × 408,988,396.04
  4. Step 4: Simplify right side
    643,862,062.60x = 363,639,734,753,177,408
  5. Step 5: Solve for x
    x = 363,639,734,753,177,408/643,862,062.60
  6. Step 6: Final answer
    x = 564,778,942.38

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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.