Home / 646,739.80-970,109.70-579,088.60

Finding the Fourth Proportional to 646,739.80, 970,109.70 and 579,088.60

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Solution

The fourth proportional to 646,739.80, 970,109.70 and 579,088.60 is: 868,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,739.80 : 970,109.70 = 579,088.60 : x
  2. Step 2: Convert to fraction form
    646,739.80/970,109.70 = 579,088.60/x
  3. Step 3: Cross multiply
    646,739.80x = 970,109.70 × 579,088.60
  4. Step 4: Simplify right side
    646,739.80x = 561,779,468,019.42
  5. Step 5: Solve for x
    x = 561,779,468,019.42/646,739.80
  6. Step 6: Final answer
    x = 868,632.90

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Similar ratio
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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.