Home / 702,725,133.75-969,760,665.32-389,506,405.47

Finding the Fourth Proportional to 702,725,133.75, 969,760,665.32 and 389,506,405.47

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Solution

The fourth proportional to 702,725,133.75, 969,760,665.32 and 389,506,405.47 is: 537,518,828.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,725,133.75 : 969,760,665.32 = 389,506,405.47 : x
  2. Step 2: Convert to fraction form
    702,725,133.75/969,760,665.32 = 389,506,405.47/x
  3. Step 3: Cross multiply
    702,725,133.75x = 969,760,665.32 × 389,506,405.47
  4. Step 4: Simplify right side
    702,725,133.75x = 377,727,990,914,988,928
  5. Step 5: Solve for x
    x = 377,727,990,914,988,928/702,725,133.75
  6. Step 6: Final answer
    x = 537,518,828.88

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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.