Home / 723,127.14-997,923.78-400,842.72

Finding the Fourth Proportional to 723,127.14, 997,923.78 and 400,842.72

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Solution

The fourth proportional to 723,127.14, 997,923.78 and 400,842.72 is: 553,167.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,127.14 : 997,923.78 = 400,842.72 : x
  2. Step 2: Convert to fraction form
    723,127.14/997,923.78 = 400,842.72/x
  3. Step 3: Cross multiply
    723,127.14x = 997,923.78 × 400,842.72
  4. Step 4: Simplify right side
    723,127.14x = 400,010,482,327.88
  5. Step 5: Solve for x
    x = 400,010,482,327.88/723,127.14
  6. Step 6: Final answer
    x = 553,167.57

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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.