Home / 689,063.40-1,030,679.10-618,496.20

Finding the Fourth Proportional to 689,063.40, 1,030,679.10 and 618,496.20

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Solution

The fourth proportional to 689,063.40, 1,030,679.10 and 618,496.20 is: 925,126.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,063.40 : 1,030,679.10 = 618,496.20 : x
  2. Step 2: Convert to fraction form
    689,063.40/1,030,679.10 = 618,496.20/x
  3. Step 3: Cross multiply
    689,063.40x = 1,030,679.10 × 618,496.20
  4. Step 4: Simplify right side
    689,063.40x = 637,471,106,769.42
  5. Step 5: Solve for x
    x = 637,471,106,769.42/689,063.40
  6. Step 6: Final answer
    x = 925,126.93

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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.