Home / 687,750,817.79-949,092,085.89-374,484,281.69

Finding the Fourth Proportional to 687,750,817.79, 949,092,085.89 and 374,484,281.69

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Solution

The fourth proportional to 687,750,817.79, 949,092,085.89 and 374,484,281.69 is: 516,786,107.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,750,817.79 : 949,092,085.89 = 374,484,281.69 : x
  2. Step 2: Convert to fraction form
    687,750,817.79/949,092,085.89 = 374,484,281.69/x
  3. Step 3: Cross multiply
    687,750,817.79x = 949,092,085.89 × 374,484,281.69
  4. Step 4: Simplify right side
    687,750,817.79x = 355,420,068,042,180,416
  5. Step 5: Solve for x
    x = 355,420,068,042,180,416/687,750,817.79
  6. Step 6: Final answer
    x = 516,786,107.48

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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.