Home / 692,136.80-1,038,205.20-407,535.20

Finding the Fourth Proportional to 692,136.80, 1,038,205.20 and 407,535.20

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Solution

The fourth proportional to 692,136.80, 1,038,205.20 and 407,535.20 is: 611,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,136.80 : 1,038,205.20 = 407,535.20 : x
  2. Step 2: Convert to fraction form
    692,136.80/1,038,205.20 = 407,535.20/x
  3. Step 3: Cross multiply
    692,136.80x = 1,038,205.20 × 407,535.20
  4. Step 4: Simplify right side
    692,136.80x = 423,105,163,823.04
  5. Step 5: Solve for x
    x = 423,105,163,823.04/692,136.80
  6. Step 6: Final answer
    x = 611,302.80

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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.