Home / 530,186.18-731,664.45-288,468.95

Finding the Fourth Proportional to 530,186.18, 731,664.45 and 288,468.95

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Solution

The fourth proportional to 530,186.18, 731,664.45 and 288,468.95 is: 398,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,186.18 : 731,664.45 = 288,468.95 : x
  2. Step 2: Convert to fraction form
    530,186.18/731,664.45 = 288,468.95/x
  3. Step 3: Cross multiply
    530,186.18x = 731,664.45 × 288,468.95
  4. Step 4: Simplify right side
    530,186.18x = 211,062,471,985.51
  5. Step 5: Solve for x
    x = 211,062,471,985.51/530,186.18
  6. Step 6: Final answer
    x = 398,091.24

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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.