Home / 860,128.98-1,289,341.24-403,903.51

Finding the Fourth Proportional to 860,128.98, 1,289,341.24 and 403,903.51

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Solution

The fourth proportional to 860,128.98, 1,289,341.24 and 403,903.51 is: 605,455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,128.98 : 1,289,341.24 = 403,903.51 : x
  2. Step 2: Convert to fraction form
    860,128.98/1,289,341.24 = 403,903.51/x
  3. Step 3: Cross multiply
    860,128.98x = 1,289,341.24 × 403,903.51
  4. Step 4: Simplify right side
    860,128.98x = 520,769,457,715.14
  5. Step 5: Solve for x
    x = 520,769,457,715.14/860,128.98
  6. Step 6: Final answer
    x = 605,455.08

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Double scale
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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.