Home / 689,070.60-1,031,637.60-618,211.80

Finding the Fourth Proportional to 689,070.60, 1,031,637.60 and 618,211.80

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Solution

The fourth proportional to 689,070.60, 1,031,637.60 and 618,211.80 is: 925,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,070.60 : 1,031,637.60 = 618,211.80 : x
  2. Step 2: Convert to fraction form
    689,070.60/1,031,637.60 = 618,211.80/x
  3. Step 3: Cross multiply
    689,070.60x = 1,031,637.60 × 618,211.80
  4. Step 4: Simplify right side
    689,070.60x = 637,770,537,643.68
  5. Step 5: Solve for x
    x = 637,770,537,643.68/689,070.60
  6. Step 6: Final answer
    x = 925,551.81

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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.