Home / 530,288.40-731,806.80-288,581.16

Finding the Fourth Proportional to 530,288.40, 731,806.80 and 288,581.16

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Solution

The fourth proportional to 530,288.40, 731,806.80 and 288,581.16 is: 398,246.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,288.40 : 731,806.80 = 288,581.16 : x
  2. Step 2: Convert to fraction form
    530,288.40/731,806.80 = 288,581.16/x
  3. Step 3: Cross multiply
    530,288.40x = 731,806.80 × 288,581.16
  4. Step 4: Simplify right side
    530,288.40x = 211,185,655,239.89
  5. Step 5: Solve for x
    x = 211,185,655,239.89/530,288.40
  6. Step 6: Final answer
    x = 398,246.79

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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.