Home / 530,135.76-731,590.52-288,420.04

Finding the Fourth Proportional to 530,135.76, 731,590.52 and 288,420.04

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Solution

The fourth proportional to 530,135.76, 731,590.52 and 288,420.04 is: 398,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,135.76 : 731,590.52 = 288,420.04 : x
  2. Step 2: Convert to fraction form
    530,135.76/731,590.52 = 288,420.04/x
  3. Step 3: Cross multiply
    530,135.76x = 731,590.52 × 288,420.04
  4. Step 4: Simplify right side
    530,135.76x = 211,005,367,042.02
  5. Step 5: Solve for x
    x = 211,005,367,042.02/530,135.76
  6. Step 6: Final answer
    x = 398,021.38

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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.