Home / 920,021,849,257.85-1,380,060,888,342.60-315,638,576,871.12

Finding the Fourth Proportional to 920,021,849,257.85, 1,380,060,888,342.60 and 315,638,576,871.12

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Solution

The fourth proportional to 920,021,849,257.85, 1,380,060,888,342.60 and 315,638,576,871.12 is: 473,467,510,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,021,849,257.85 : 1,380,060,888,342.60 = 315,638,576,871.12 : x
  2. Step 2: Convert to fraction form
    920,021,849,257.85/1,380,060,888,342.60 = 315,638,576,871.12/x
  3. Step 3: Cross multiply
    920,021,849,257.85x = 1,380,060,888,342.60 × 315,638,576,871.12
  4. Step 4: Simplify right side
    920,021,849,257.85x = 435,600,454,791,951,900,737,536
  5. Step 5: Solve for x
    x = 435,600,454,791,951,900,737,536/920,021,849,257.85
  6. Step 6: Final answer
    x = 473,467,510,737.20

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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.