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Finding the Fourth Proportional to 710,648.92, 980,698.08 and 388,363.96

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Solution

The fourth proportional to 710,648.92, 980,698.08 and 388,363.96 is: 535,943.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,648.92 : 980,698.08 = 388,363.96 : x
  2. Step 2: Convert to fraction form
    710,648.92/980,698.08 = 388,363.96/x
  3. Step 3: Cross multiply
    710,648.92x = 980,698.08 × 388,363.96
  4. Step 4: Simplify right side
    710,648.92x = 380,867,789,913.20
  5. Step 5: Solve for x
    x = 380,867,789,913.20/710,648.92
  6. Step 6: Final answer
    x = 535,943.67

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1.5x scale

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.