Home / 811,710.96-1,120,337.68-472,223.76

Finding the Fourth Proportional to 811,710.96, 1,120,337.68 and 472,223.76

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Solution

The fourth proportional to 811,710.96, 1,120,337.68 and 472,223.76 is: 651,771.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,710.96 : 1,120,337.68 = 472,223.76 : x
  2. Step 2: Convert to fraction form
    811,710.96/1,120,337.68 = 472,223.76/x
  3. Step 3: Cross multiply
    811,710.96x = 1,120,337.68 × 472,223.76
  4. Step 4: Simplify right side
    811,710.96x = 529,050,071,719.28
  5. Step 5: Solve for x
    x = 529,050,071,719.28/811,710.96
  6. Step 6: Final answer
    x = 651,771.50

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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.