Home / 831,257.40-1,147,136.85-468,680.45

Finding the Fourth Proportional to 831,257.40, 1,147,136.85 and 468,680.45

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Solution

The fourth proportional to 831,257.40, 1,147,136.85 and 468,680.45 is: 646,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,257.40 : 1,147,136.85 = 468,680.45 : x
  2. Step 2: Convert to fraction form
    831,257.40/1,147,136.85 = 468,680.45/x
  3. Step 3: Cross multiply
    831,257.40x = 1,147,136.85 × 468,680.45
  4. Step 4: Simplify right side
    831,257.40x = 537,640,609,333.90
  5. Step 5: Solve for x
    x = 537,640,609,333.90/831,257.40
  6. Step 6: Final answer
    x = 646,779.93

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Double scale
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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.