Home / 689,028.40-1,030,626.60-618,461.20

Finding the Fourth Proportional to 689,028.40, 1,030,626.60 and 618,461.20

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Solution

The fourth proportional to 689,028.40, 1,030,626.60 and 618,461.20 is: 925,074.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,028.40 : 1,030,626.60 = 618,461.20 : x
  2. Step 2: Convert to fraction form
    689,028.40/1,030,626.60 = 618,461.20/x
  3. Step 3: Cross multiply
    689,028.40x = 1,030,626.60 × 618,461.20
  4. Step 4: Simplify right side
    689,028.40x = 637,402,563,787.92
  5. Step 5: Solve for x
    x = 637,402,563,787.92/689,028.40
  6. Step 6: Final answer
    x = 925,074.44

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1.5x scale

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.