Home / 529,901.83-731,257.45-288,179.20

Finding the Fourth Proportional to 529,901.83, 731,257.45 and 288,179.20

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Solution

The fourth proportional to 529,901.83, 731,257.45 and 288,179.20 is: 397,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,901.83 : 731,257.45 = 288,179.20 : x
  2. Step 2: Convert to fraction form
    529,901.83/731,257.45 = 288,179.20/x
  3. Step 3: Cross multiply
    529,901.83x = 731,257.45 × 288,179.20
  4. Step 4: Simplify right side
    529,901.83x = 210,733,186,935.04
  5. Step 5: Solve for x
    x = 210,733,186,935.04/529,901.83
  6. Step 6: Final answer
    x = 397,683.45

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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.