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Finding the Fourth Proportional to 723,557.50, 998,509.35 and 401,316.94

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Solution

The fourth proportional to 723,557.50, 998,509.35 and 401,316.94 is: 553,817.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,557.50 : 998,509.35 = 401,316.94 : x
  2. Step 2: Convert to fraction form
    723,557.50/998,509.35 = 401,316.94/x
  3. Step 3: Cross multiply
    723,557.50x = 998,509.35 × 401,316.94
  4. Step 4: Simplify right side
    723,557.50x = 400,718,716,903.39
  5. Step 5: Solve for x
    x = 400,718,716,903.39/723,557.50
  6. Step 6: Final answer
    x = 553,817.38

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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.