Home / 530,387.56-731,934.83-288,671.89

Finding the Fourth Proportional to 530,387.56, 731,934.83 and 288,671.89

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Solution

The fourth proportional to 530,387.56, 731,934.83 and 288,671.89 is: 398,367.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,387.56 : 731,934.83 = 288,671.89 : x
  2. Step 2: Convert to fraction form
    530,387.56/731,934.83 = 288,671.89/x
  3. Step 3: Cross multiply
    530,387.56x = 731,934.83 × 288,671.89
  4. Step 4: Simplify right side
    530,387.56x = 211,289,009,967.86
  5. Step 5: Solve for x
    x = 211,289,009,967.86/530,387.56
  6. Step 6: Final answer
    x = 398,367.21

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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.