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Finding the Fourth Proportional to 724,143.32, 999,302.64 and 401,850.80

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Solution

The fourth proportional to 724,143.32, 999,302.64 and 401,850.80 is: 554,545.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,143.32 : 999,302.64 = 401,850.80 : x
  2. Step 2: Convert to fraction form
    724,143.32/999,302.64 = 401,850.80/x
  3. Step 3: Cross multiply
    724,143.32x = 999,302.64 × 401,850.80
  4. Step 4: Simplify right side
    724,143.32x = 401,570,565,326.11
  5. Step 5: Solve for x
    x = 401,570,565,326.11/724,143.32
  6. Step 6: Final answer
    x = 554,545.70

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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.