Home / 691,875.20-1,037,812.80-424,769.60

Finding the Fourth Proportional to 691,875.20, 1,037,812.80 and 424,769.60

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Solution

The fourth proportional to 691,875.20, 1,037,812.80 and 424,769.60 is: 637,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,875.20 : 1,037,812.80 = 424,769.60 : x
  2. Step 2: Convert to fraction form
    691,875.20/1,037,812.80 = 424,769.60/x
  3. Step 3: Cross multiply
    691,875.20x = 1,037,812.80 × 424,769.60
  4. Step 4: Simplify right side
    691,875.20x = 440,831,327,930.88
  5. Step 5: Solve for x
    x = 440,831,327,930.88/691,875.20
  6. Step 6: Final answer
    x = 637,154.40

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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.