Home / 809,487,864.72-1,117,096,818.44-438,209,896.10

Finding the Fourth Proportional to 809,487,864.72, 1,117,096,818.44 and 438,209,896.10

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Solution

The fourth proportional to 809,487,864.72, 1,117,096,818.44 and 438,209,896.10 is: 604,731,586.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,487,864.72 : 1,117,096,818.44 = 438,209,896.10 : x
  2. Step 2: Convert to fraction form
    809,487,864.72/1,117,096,818.44 = 438,209,896.10/x
  3. Step 3: Cross multiply
    809,487,864.72x = 1,117,096,818.44 × 438,209,896.10
  4. Step 4: Simplify right side
    809,487,864.72x = 489,522,880,734,456,448
  5. Step 5: Solve for x
    x = 489,522,880,734,456,448/809,487,864.72
  6. Step 6: Final answer
    x = 604,731,586.56

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1.5x scale

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.