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Finding the Fourth Proportional to 724,466.88, 999,744.66 and 402,168.72

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Solution

The fourth proportional to 724,466.88, 999,744.66 and 402,168.72 is: 554,981.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,466.88 : 999,744.66 = 402,168.72 : x
  2. Step 2: Convert to fraction form
    724,466.88/999,744.66 = 402,168.72/x
  3. Step 3: Cross multiply
    724,466.88x = 999,744.66 × 402,168.72
  4. Step 4: Simplify right side
    724,466.88x = 402,066,030,239.04
  5. Step 5: Solve for x
    x = 402,066,030,239.04/724,466.88
  6. Step 6: Final answer
    x = 554,981.93

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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.