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Finding the Fourth Proportional to 978,007.80, 1,467,011.70 and 499,710.90

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Solution

The fourth proportional to 978,007.80, 1,467,011.70 and 499,710.90 is: 749,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,007.80 : 1,467,011.70 = 499,710.90 : x
  2. Step 2: Convert to fraction form
    978,007.80/1,467,011.70 = 499,710.90/x
  3. Step 3: Cross multiply
    978,007.80x = 1,467,011.70 × 499,710.90
  4. Step 4: Simplify right side
    978,007.80x = 733,081,736,917.53
  5. Step 5: Solve for x
    x = 733,081,736,917.53/978,007.80
  6. Step 6: Final answer
    x = 749,566.35

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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.