Home / 530,130.14-731,581.33-288,412.66

Finding the Fourth Proportional to 530,130.14, 731,581.33 and 288,412.66

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Solution

The fourth proportional to 530,130.14, 731,581.33 and 288,412.66 is: 398,010.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,130.14 : 731,581.33 = 288,412.66 : x
  2. Step 2: Convert to fraction form
    530,130.14/731,581.33 = 288,412.66/x
  3. Step 3: Cross multiply
    530,130.14x = 731,581.33 × 288,412.66
  4. Step 4: Simplify right side
    530,130.14x = 210,997,317,391.64
  5. Step 5: Solve for x
    x = 210,997,317,391.64/530,130.14
  6. Step 6: Final answer
    x = 398,010.42

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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.