Home / 682,865.35-942,708.10-498,897.34

Finding the Fourth Proportional to 682,865.35, 942,708.10 and 498,897.34

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Solution

The fourth proportional to 682,865.35, 942,708.10 and 498,897.34 is: 688,736.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,865.35 : 942,708.10 = 498,897.34 : x
  2. Step 2: Convert to fraction form
    682,865.35/942,708.10 = 498,897.34/x
  3. Step 3: Cross multiply
    682,865.35x = 942,708.10 × 498,897.34
  4. Step 4: Simplify right side
    682,865.35x = 470,314,563,486.45
  5. Step 5: Solve for x
    x = 470,314,563,486.45/682,865.35
  6. Step 6: Final answer
    x = 688,736.90

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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.