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Finding the Fourth Proportional to 620,663.46, 930,969.90 and 215,948.32

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Solution

The fourth proportional to 620,663.46, 930,969.90 and 215,948.32 is: 323,913.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,663.46 : 930,969.90 = 215,948.32 : x
  2. Step 2: Convert to fraction form
    620,663.46/930,969.90 = 215,948.32/x
  3. Step 3: Cross multiply
    620,663.46x = 930,969.90 × 215,948.32
  4. Step 4: Simplify right side
    620,663.46x = 201,041,385,875.57
  5. Step 5: Solve for x
    x = 201,041,385,875.57/620,663.46
  6. Step 6: Final answer
    x = 323,913.68

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1.5x scale

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.