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Finding the Fourth Proportional to 724,324.32, 999,553.32 and 402,038.28

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Solution

The fourth proportional to 724,324.32, 999,553.32 and 402,038.28 is: 554,804.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,324.32 : 999,553.32 = 402,038.28 : x
  2. Step 2: Convert to fraction form
    724,324.32/999,553.32 = 402,038.28/x
  3. Step 3: Cross multiply
    724,324.32x = 999,553.32 × 402,038.28
  4. Step 4: Simplify right side
    724,324.32x = 401,858,697,541.09
  5. Step 5: Solve for x
    x = 401,858,697,541.09/724,324.32
  6. Step 6: Final answer
    x = 554,804.92

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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.