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Finding the Fourth Proportional to 525,082.80, 786,457.80 and 455,098.80

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Solution

The fourth proportional to 525,082.80, 786,457.80 and 455,098.80 is: 681,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,082.80 : 786,457.80 = 455,098.80 : x
  2. Step 2: Convert to fraction form
    525,082.80/786,457.80 = 455,098.80/x
  3. Step 3: Cross multiply
    525,082.80x = 786,457.80 × 455,098.80
  4. Step 4: Simplify right side
    525,082.80x = 357,916,001,030.64
  5. Step 5: Solve for x
    x = 357,916,001,030.64/525,082.80
  6. Step 6: Final answer
    x = 681,637.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.