Home / 285,840,007.20-428,760,010.80-177,000,890.40

Finding the Fourth Proportional to 285,840,007.20, 428,760,010.80 and 177,000,890.40

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Solution

The fourth proportional to 285,840,007.20, 428,760,010.80 and 177,000,890.40 is: 265,501,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,840,007.20 : 428,760,010.80 = 177,000,890.40 : x
  2. Step 2: Convert to fraction form
    285,840,007.20/428,760,010.80 = 177,000,890.40/x
  3. Step 3: Cross multiply
    285,840,007.20x = 428,760,010.80 × 177,000,890.40
  4. Step 4: Simplify right side
    285,840,007.20x = 75,890,903,679,513,616
  5. Step 5: Solve for x
    x = 75,890,903,679,513,616/285,840,007.20
  6. Step 6: Final answer
    x = 265,501,335.60

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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.