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Finding the Fourth Proportional to 474,007.40, 711,011.10 and 442,903.40

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Solution

The fourth proportional to 474,007.40, 711,011.10 and 442,903.40 is: 664,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,007.40 : 711,011.10 = 442,903.40 : x
  2. Step 2: Convert to fraction form
    474,007.40/711,011.10 = 442,903.40/x
  3. Step 3: Cross multiply
    474,007.40x = 711,011.10 × 442,903.40
  4. Step 4: Simplify right side
    474,007.40x = 314,909,233,627.74
  5. Step 5: Solve for x
    x = 314,909,233,627.74/474,007.40
  6. Step 6: Final answer
    x = 664,355.10

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Similar ratio
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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.