Home / 679,913.08-938,303.08-374,012.20

Finding the Fourth Proportional to 679,913.08, 938,303.08 and 374,012.20

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Solution

The fourth proportional to 679,913.08, 938,303.08 and 374,012.20 is: 516,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,913.08 : 938,303.08 = 374,012.20 : x
  2. Step 2: Convert to fraction form
    679,913.08/938,303.08 = 374,012.20/x
  3. Step 3: Cross multiply
    679,913.08x = 938,303.08 × 374,012.20
  4. Step 4: Simplify right side
    679,913.08x = 350,936,799,217.58
  5. Step 5: Solve for x
    x = 350,936,799,217.58/679,913.08
  6. Step 6: Final answer
    x = 516,149.50

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.