Home / 525,313,430.40-787,970,145.60-142,360,982.40

Finding the Fourth Proportional to 525,313,430.40, 787,970,145.60 and 142,360,982.40

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Solution

The fourth proportional to 525,313,430.40, 787,970,145.60 and 142,360,982.40 is: 213,541,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,313,430.40 : 787,970,145.60 = 142,360,982.40 : x
  2. Step 2: Convert to fraction form
    525,313,430.40/787,970,145.60 = 142,360,982.40/x
  3. Step 3: Cross multiply
    525,313,430.40x = 787,970,145.60 × 142,360,982.40
  4. Step 4: Simplify right side
    525,313,430.40x = 112,176,204,029,487,040
  5. Step 5: Solve for x
    x = 112,176,204,029,487,040/525,313,430.40
  6. Step 6: Final answer
    x = 213,541,473.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.