Home / 723,145.59-997,836.03-400,855.50

Finding the Fourth Proportional to 723,145.59, 997,836.03 and 400,855.50

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Solution

The fourth proportional to 723,145.59, 997,836.03 and 400,855.50 is: 553,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,145.59 : 997,836.03 = 400,855.50 : x
  2. Step 2: Convert to fraction form
    723,145.59/997,836.03 = 400,855.50/x
  3. Step 3: Cross multiply
    723,145.59x = 997,836.03 × 400,855.50
  4. Step 4: Simplify right side
    723,145.59x = 399,988,060,723.67
  5. Step 5: Solve for x
    x = 399,988,060,723.67/723,145.59
  6. Step 6: Final answer
    x = 553,122.45

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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.