Home / 722,719.08-997,384.28-400,429.08

Finding the Fourth Proportional to 722,719.08, 997,384.28 and 400,429.08

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Solution

The fourth proportional to 722,719.08, 997,384.28 and 400,429.08 is: 552,609.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,719.08 : 997,384.28 = 400,429.08 : x
  2. Step 2: Convert to fraction form
    722,719.08/997,384.28 = 400,429.08/x
  3. Step 3: Cross multiply
    722,719.08x = 997,384.28 × 400,429.08
  4. Step 4: Simplify right side
    722,719.08x = 399,381,669,646.86
  5. Step 5: Solve for x
    x = 399,381,669,646.86/722,719.08
  6. Step 6: Final answer
    x = 552,609.83

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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.