Home / 686,987.20-1,030,480.80-435,044.80

Finding the Fourth Proportional to 686,987.20, 1,030,480.80 and 435,044.80

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Solution

The fourth proportional to 686,987.20, 1,030,480.80 and 435,044.80 is: 652,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,987.20 : 1,030,480.80 = 435,044.80 : x
  2. Step 2: Convert to fraction form
    686,987.20/1,030,480.80 = 435,044.80/x
  3. Step 3: Cross multiply
    686,987.20x = 1,030,480.80 × 435,044.80
  4. Step 4: Simplify right side
    686,987.20x = 448,305,313,539.84
  5. Step 5: Solve for x
    x = 448,305,313,539.84/686,987.20
  6. Step 6: Final answer
    x = 652,567.20

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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.