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Finding the Fourth Proportional to 836,661.70, 1,254,992.55 and 778,924.90

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Solution

The fourth proportional to 836,661.70, 1,254,992.55 and 778,924.90 is: 1,168,387.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,661.70 : 1,254,992.55 = 778,924.90 : x
  2. Step 2: Convert to fraction form
    836,661.70/1,254,992.55 = 778,924.90/x
  3. Step 3: Cross multiply
    836,661.70x = 1,254,992.55 × 778,924.90
  4. Step 4: Simplify right side
    836,661.70x = 977,544,946,509.50
  5. Step 5: Solve for x
    x = 977,544,946,509.50/836,661.70
  6. Step 6: Final answer
    x = 1,168,387.35

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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.