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Finding the Fourth Proportional to 978,007.60, 1,467,011.40 and 472,956.40

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Solution

The fourth proportional to 978,007.60, 1,467,011.40 and 472,956.40 is: 709,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,007.60 : 1,467,011.40 = 472,956.40 : x
  2. Step 2: Convert to fraction form
    978,007.60/1,467,011.40 = 472,956.40/x
  3. Step 3: Cross multiply
    978,007.60x = 1,467,011.40 × 472,956.40
  4. Step 4: Simplify right side
    978,007.60x = 693,832,430,502.96
  5. Step 5: Solve for x
    x = 693,832,430,502.96/978,007.60
  6. Step 6: Final answer
    x = 709,434.60

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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.