Home / 812,298.96-1,219,235.76-391,870.08

Finding the Fourth Proportional to 812,298.96, 1,219,235.76 and 391,870.08

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Solution

The fourth proportional to 812,298.96, 1,219,235.76 and 391,870.08 is: 588,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,298.96 : 1,219,235.76 = 391,870.08 : x
  2. Step 2: Convert to fraction form
    812,298.96/1,219,235.76 = 391,870.08/x
  3. Step 3: Cross multiply
    812,298.96x = 1,219,235.76 × 391,870.08
  4. Step 4: Simplify right side
    812,298.96x = 477,782,014,810.06
  5. Step 5: Solve for x
    x = 477,782,014,810.06/812,298.96
  6. Step 6: Final answer
    x = 588,184.94

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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.