Home / 978,550,678.40-1,350,400,156.62-538,517,530.40

Finding the Fourth Proportional to 978,550,678.40, 1,350,400,156.62 and 538,517,530.40

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Solution

The fourth proportional to 978,550,678.40, 1,350,400,156.62 and 538,517,530.40 is: 743,154,313.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,550,678.40 : 1,350,400,156.62 = 538,517,530.40 : x
  2. Step 2: Convert to fraction form
    978,550,678.40/1,350,400,156.62 = 538,517,530.40/x
  3. Step 3: Cross multiply
    978,550,678.40x = 1,350,400,156.62 × 538,517,530.40
  4. Step 4: Simplify right side
    978,550,678.40x = 727,214,157,394,775,552
  5. Step 5: Solve for x
    x = 727,214,157,394,775,552/978,550,678.40
  6. Step 6: Final answer
    x = 743,154,313.26

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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.