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Finding the Fourth Proportional to 662,690.16, 915,051.74 and 540,201.76

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Solution

The fourth proportional to 662,690.16, 915,051.74 and 540,201.76 is: 745,918.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,690.16 : 915,051.74 = 540,201.76 : x
  2. Step 2: Convert to fraction form
    662,690.16/915,051.74 = 540,201.76/x
  3. Step 3: Cross multiply
    662,690.16x = 915,051.74 × 540,201.76
  4. Step 4: Simplify right side
    662,690.16x = 494,312,555,450.42
  5. Step 5: Solve for x
    x = 494,312,555,450.42/662,690.16
  6. Step 6: Final answer
    x = 745,918.06

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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.