Home / 739,369,396.98-1,020,357,255.78-421,881,332.76

Finding the Fourth Proportional to 739,369,396.98, 1,020,357,255.78 and 421,881,332.76

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Solution

The fourth proportional to 739,369,396.98, 1,020,357,255.78 and 421,881,332.76 is: 582,211,923.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,369,396.98 : 1,020,357,255.78 = 421,881,332.76 : x
  2. Step 2: Convert to fraction form
    739,369,396.98/1,020,357,255.78 = 421,881,332.76/x
  3. Step 3: Cross multiply
    739,369,396.98x = 1,020,357,255.78 × 421,881,332.76
  4. Step 4: Simplify right side
    739,369,396.98x = 430,469,678,959,802,560
  5. Step 5: Solve for x
    x = 430,469,678,959,802,560/739,369,396.98
  6. Step 6: Final answer
    x = 582,211,923.73

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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.