Home / 651,628.20-977,442.30-313,639.50

Finding the Fourth Proportional to 651,628.20, 977,442.30 and 313,639.50

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Solution

The fourth proportional to 651,628.20, 977,442.30 and 313,639.50 is: 470,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,628.20 : 977,442.30 = 313,639.50 : x
  2. Step 2: Convert to fraction form
    651,628.20/977,442.30 = 313,639.50/x
  3. Step 3: Cross multiply
    651,628.20x = 977,442.30 × 313,639.50
  4. Step 4: Simplify right side
    651,628.20x = 306,564,514,250.85
  5. Step 5: Solve for x
    x = 306,564,514,250.85/651,628.20
  6. Step 6: Final answer
    x = 470,459.25

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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.