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Finding the Fourth Proportional to 688,357.71, 949,668.30 and 507,499.56

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Solution

The fourth proportional to 688,357.71, 949,668.30 and 507,499.56 is: 700,153.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,357.71 : 949,668.30 = 507,499.56 : x
  2. Step 2: Convert to fraction form
    688,357.71/949,668.30 = 507,499.56/x
  3. Step 3: Cross multiply
    688,357.71x = 949,668.30 × 507,499.56
  4. Step 4: Simplify right side
    688,357.71x = 481,956,244,395.95
  5. Step 5: Solve for x
    x = 481,956,244,395.95/688,357.71
  6. Step 6: Final answer
    x = 700,153.77

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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.