Home / 689,079.40-1,030,703.10-618,512.20

Finding the Fourth Proportional to 689,079.40, 1,030,703.10 and 618,512.20

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Solution

The fourth proportional to 689,079.40, 1,030,703.10 and 618,512.20 is: 925,150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,079.40 : 1,030,703.10 = 618,512.20 : x
  2. Step 2: Convert to fraction form
    689,079.40/1,030,703.10 = 618,512.20/x
  3. Step 3: Cross multiply
    689,079.40x = 1,030,703.10 × 618,512.20
  4. Step 4: Simplify right side
    689,079.40x = 637,502,441,927.82
  5. Step 5: Solve for x
    x = 637,502,441,927.82/689,079.40
  6. Step 6: Final answer
    x = 925,150.92

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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.