Home / 917,913.90-1,376,931.60-243,985.80

Finding the Fourth Proportional to 917,913.90, 1,376,931.60 and 243,985.80

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Solution

The fourth proportional to 917,913.90, 1,376,931.60 and 243,985.80 is: 365,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,913.90 : 1,376,931.60 = 243,985.80 : x
  2. Step 2: Convert to fraction form
    917,913.90/1,376,931.60 = 243,985.80/x
  3. Step 3: Cross multiply
    917,913.90x = 1,376,931.60 × 243,985.80
  4. Step 4: Simplify right side
    917,913.90x = 335,951,757,971.28
  5. Step 5: Solve for x
    x = 335,951,757,971.28/917,913.90
  6. Step 6: Final answer
    x = 365,994.85

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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.