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Finding the Fourth Proportional to 517,491.77, 714,146.72 and 288,051.55

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Solution

The fourth proportional to 517,491.77, 714,146.72 and 288,051.55 is: 397,515.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,491.77 : 714,146.72 = 288,051.55 : x
  2. Step 2: Convert to fraction form
    517,491.77/714,146.72 = 288,051.55/x
  3. Step 3: Cross multiply
    517,491.77x = 714,146.72 × 288,051.55
  4. Step 4: Simplify right side
    517,491.77x = 205,711,068,018.08
  5. Step 5: Solve for x
    x = 205,711,068,018.08/517,491.77
  6. Step 6: Final answer
    x = 397,515.63

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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.