Home / 765,156.10-1,147,864.85-315,631.23

Finding the Fourth Proportional to 765,156.10, 1,147,864.85 and 315,631.23

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Solution

The fourth proportional to 765,156.10, 1,147,864.85 and 315,631.23 is: 473,500.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,156.10 : 1,147,864.85 = 315,631.23 : x
  2. Step 2: Convert to fraction form
    765,156.10/1,147,864.85 = 315,631.23/x
  3. Step 3: Cross multiply
    765,156.10x = 1,147,864.85 × 315,631.23
  4. Step 4: Simplify right side
    765,156.10x = 362,301,994,479.27
  5. Step 5: Solve for x
    x = 362,301,994,479.27/765,156.10
  6. Step 6: Final answer
    x = 473,500.76

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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.