Home / 689,430.51-1,034,146.07-216,152.77

Finding the Fourth Proportional to 689,430.51, 1,034,146.07 and 216,152.77

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Solution

The fourth proportional to 689,430.51, 1,034,146.07 and 216,152.77 is: 324,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,430.51 : 1,034,146.07 = 216,152.77 : x
  2. Step 2: Convert to fraction form
    689,430.51/1,034,146.07 = 216,152.77/x
  3. Step 3: Cross multiply
    689,430.51x = 1,034,146.07 × 216,152.77
  4. Step 4: Simplify right side
    689,430.51x = 223,533,536,534.35
  5. Step 5: Solve for x
    x = 223,533,536,534.35/689,430.51
  6. Step 6: Final answer
    x = 324,229.25

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Double scale
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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.