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Finding the Fourth Proportional to 525,703,391.60, 788,555,087.40 and 389,654,495.60

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Solution

The fourth proportional to 525,703,391.60, 788,555,087.40 and 389,654,495.60 is: 584,481,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,703,391.60 : 788,555,087.40 = 389,654,495.60 : x
  2. Step 2: Convert to fraction form
    525,703,391.60/788,555,087.40 = 389,654,495.60/x
  3. Step 3: Cross multiply
    525,703,391.60x = 788,555,087.40 × 389,654,495.60
  4. Step 4: Simplify right side
    525,703,391.60x = 307,264,034,833,660,928
  5. Step 5: Solve for x
    x = 307,264,034,833,660,928/525,703,391.60
  6. Step 6: Final answer
    x = 584,481,743.40

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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.