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Finding the Fourth Proportional to 724,577.67, 999,870.93 and 402,287.67

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Solution

The fourth proportional to 724,577.67, 999,870.93 and 402,287.67 is: 555,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,577.67 : 999,870.93 = 402,287.67 : x
  2. Step 2: Convert to fraction form
    724,577.67/999,870.93 = 402,287.67/x
  3. Step 3: Cross multiply
    724,577.67x = 999,870.93 × 402,287.67
  4. Step 4: Simplify right side
    724,577.67x = 402,235,746,730.43
  5. Step 5: Solve for x
    x = 402,235,746,730.43/724,577.67
  6. Step 6: Final answer
    x = 555,131.30

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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.