Home / 688,522.80-1,030,815.90-422,802.30

Finding the Fourth Proportional to 688,522.80, 1,030,815.90 and 422,802.30

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Solution

The fourth proportional to 688,522.80, 1,030,815.90 and 422,802.30 is: 632,994.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,522.80 : 1,030,815.90 = 422,802.30 : x
  2. Step 2: Convert to fraction form
    688,522.80/1,030,815.90 = 422,802.30/x
  3. Step 3: Cross multiply
    688,522.80x = 1,030,815.90 × 422,802.30
  4. Step 4: Simplify right side
    688,522.80x = 435,831,333,396.57
  5. Step 5: Solve for x
    x = 435,831,333,396.57/688,522.80
  6. Step 6: Final answer
    x = 632,994.77

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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.