Home / 621,228,657.28-857,313,485.76-342,788,116.54

Finding the Fourth Proportional to 621,228,657.28, 857,313,485.76 and 342,788,116.54

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Solution

The fourth proportional to 621,228,657.28, 857,313,485.76 and 342,788,116.54 is: 473,057,499.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,228,657.28 : 857,313,485.76 = 342,788,116.54 : x
  2. Step 2: Convert to fraction form
    621,228,657.28/857,313,485.76 = 342,788,116.54/x
  3. Step 3: Cross multiply
    621,228,657.28x = 857,313,485.76 × 342,788,116.54
  4. Step 4: Simplify right side
    621,228,657.28x = 293,876,875,068,012,544
  5. Step 5: Solve for x
    x = 293,876,875,068,012,544/621,228,657.28
  6. Step 6: Final answer
    x = 473,057,499.24

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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.