Home / 530,382.40-731,945.67-288,673.74

Finding the Fourth Proportional to 530,382.40, 731,945.67 and 288,673.74

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Solution

The fourth proportional to 530,382.40, 731,945.67 and 288,673.74 is: 398,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,382.40 : 731,945.67 = 288,673.74 : x
  2. Step 2: Convert to fraction form
    530,382.40/731,945.67 = 288,673.74/x
  3. Step 3: Cross multiply
    530,382.40x = 731,945.67 × 288,673.74
  4. Step 4: Simplify right side
    530,382.40x = 211,293,492,953.18
  5. Step 5: Solve for x
    x = 211,293,492,953.18/530,382.40
  6. Step 6: Final answer
    x = 398,379.54

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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.