Home / 920,021,849,257.66-1,380,060,888,342.20-315,638,576,870.90

Finding the Fourth Proportional to 920,021,849,257.66, 1,380,060,888,342.20 and 315,638,576,870.90

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Solution

The fourth proportional to 920,021,849,257.66, 1,380,060,888,342.20 and 315,638,576,870.90 is: 473,467,510,736.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,021,849,257.66 : 1,380,060,888,342.20 = 315,638,576,870.90 : x
  2. Step 2: Convert to fraction form
    920,021,849,257.66/1,380,060,888,342.20 = 315,638,576,870.90/x
  3. Step 3: Cross multiply
    920,021,849,257.66x = 1,380,060,888,342.20 × 315,638,576,870.90
  4. Step 4: Simplify right side
    920,021,849,257.66x = 435,600,454,791,522,068,463,616
  5. Step 5: Solve for x
    x = 435,600,454,791,522,068,463,616/920,021,849,257.66
  6. Step 6: Final answer
    x = 473,467,510,736.83

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Double scale
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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.