Home / 831,145.30-1,243,607.55-551,209.30

Finding the Fourth Proportional to 831,145.30, 1,243,607.55 and 551,209.30

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Solution

The fourth proportional to 831,145.30, 1,243,607.55 and 551,209.30 is: 824,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,145.30 : 1,243,607.55 = 551,209.30 : x
  2. Step 2: Convert to fraction form
    831,145.30/1,243,607.55 = 551,209.30/x
  3. Step 3: Cross multiply
    831,145.30x = 1,243,607.55 × 551,209.30
  4. Step 4: Simplify right side
    831,145.30x = 685,488,047,110.22
  5. Step 5: Solve for x
    x = 685,488,047,110.22/831,145.30
  6. Step 6: Final answer
    x = 824,751.16

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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.