Home / 530,279.80-731,784.78-288,562.30

Finding the Fourth Proportional to 530,279.80, 731,784.78 and 288,562.30

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Solution

The fourth proportional to 530,279.80, 731,784.78 and 288,562.30 is: 398,215.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,279.80 : 731,784.78 = 288,562.30 : x
  2. Step 2: Convert to fraction form
    530,279.80/731,784.78 = 288,562.30/x
  3. Step 3: Cross multiply
    530,279.80x = 731,784.78 × 288,562.30
  4. Step 4: Simplify right side
    530,279.80x = 211,165,497,392.33
  5. Step 5: Solve for x
    x = 211,165,497,392.33/530,279.80
  6. Step 6: Final answer
    x = 398,215.24

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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.