Home / 525,315,999.80-787,973,999.70-353,323,321.40

Finding the Fourth Proportional to 525,315,999.80, 787,973,999.70 and 353,323,321.40

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Solution

The fourth proportional to 525,315,999.80, 787,973,999.70 and 353,323,321.40 is: 529,984,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,315,999.80 : 787,973,999.70 = 353,323,321.40 : x
  2. Step 2: Convert to fraction form
    525,315,999.80/787,973,999.70 = 353,323,321.40/x
  3. Step 3: Cross multiply
    525,315,999.80x = 787,973,999.70 × 353,323,321.40
  4. Step 4: Simplify right side
    525,315,999.80x = 278,409,590,750,846,592
  5. Step 5: Solve for x
    x = 278,409,590,750,846,592/525,315,999.80
  6. Step 6: Final answer
    x = 529,984,982.10

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1.5x scale

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.