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Finding the Fourth Proportional to 722,818.69, 997,529.58 and 400,521.71

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Solution

The fourth proportional to 722,818.69, 997,529.58 and 400,521.71 is: 552,742.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,818.69 : 997,529.58 = 400,521.71 : x
  2. Step 2: Convert to fraction form
    722,818.69/997,529.58 = 400,521.71/x
  3. Step 3: Cross multiply
    722,818.69x = 997,529.58 × 400,521.71
  4. Step 4: Simplify right side
    722,818.69x = 399,532,255,651.01
  5. Step 5: Solve for x
    x = 399,532,255,651.01/722,818.69
  6. Step 6: Final answer
    x = 552,742.01

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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.