Home / 530,188.08-731,637.59-288,471.57

Finding the Fourth Proportional to 530,188.08, 731,637.59 and 288,471.57

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Solution

The fourth proportional to 530,188.08, 731,637.59 and 288,471.57 is: 398,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,188.08 : 731,637.59 = 288,471.57 : x
  2. Step 2: Convert to fraction form
    530,188.08/731,637.59 = 288,471.57/x
  3. Step 3: Cross multiply
    530,188.08x = 731,637.59 × 288,471.57
  4. Step 4: Simplify right side
    530,188.08x = 211,056,642,815.96
  5. Step 5: Solve for x
    x = 211,056,642,815.96/530,188.08
  6. Step 6: Final answer
    x = 398,078.82

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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.