Home / 762,005.10-1,143,007.65-688,521.90

Finding the Fourth Proportional to 762,005.10, 1,143,007.65 and 688,521.90

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Solution

The fourth proportional to 762,005.10, 1,143,007.65 and 688,521.90 is: 1,032,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,005.10 : 1,143,007.65 = 688,521.90 : x
  2. Step 2: Convert to fraction form
    762,005.10/1,143,007.65 = 688,521.90/x
  3. Step 3: Cross multiply
    762,005.10x = 1,143,007.65 × 688,521.90
  4. Step 4: Simplify right side
    762,005.10x = 786,985,798,892.54
  5. Step 5: Solve for x
    x = 786,985,798,892.54/762,005.10
  6. Step 6: Final answer
    x = 1,032,782.85

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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.