Home / 860,309.12-1,186,890.58-492,589.76

Finding the Fourth Proportional to 860,309.12, 1,186,890.58 and 492,589.76

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Solution

The fourth proportional to 860,309.12, 1,186,890.58 and 492,589.76 is: 679,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,309.12 : 1,186,890.58 = 492,589.76 : x
  2. Step 2: Convert to fraction form
    860,309.12/1,186,890.58 = 492,589.76/x
  3. Step 3: Cross multiply
    860,309.12x = 1,186,890.58 × 492,589.76
  4. Step 4: Simplify right side
    860,309.12x = 584,650,145,948.46
  5. Step 5: Solve for x
    x = 584,650,145,948.46/860,309.12
  6. Step 6: Final answer
    x = 679,581.48

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Half scale
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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.