Home / 530,155.22-731,606.15-288,432.27

Finding the Fourth Proportional to 530,155.22, 731,606.15 and 288,432.27

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Solution

The fourth proportional to 530,155.22, 731,606.15 and 288,432.27 is: 398,032.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,155.22 : 731,606.15 = 288,432.27 : x
  2. Step 2: Convert to fraction form
    530,155.22/731,606.15 = 288,432.27/x
  3. Step 3: Cross multiply
    530,155.22x = 731,606.15 × 288,432.27
  4. Step 4: Simplify right side
    530,155.22x = 211,018,823,311.54
  5. Step 5: Solve for x
    x = 211,018,823,311.54/530,155.22
  6. Step 6: Final answer
    x = 398,032.16

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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.