Home / 1,291,911.89-1,938,302.51-572,153.79

Finding the Fourth Proportional to 1,291,911.89, 1,938,302.51 and 572,153.79

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Solution

The fourth proportional to 1,291,911.89, 1,938,302.51 and 572,153.79 is: 858,423.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,911.89 : 1,938,302.51 = 572,153.79 : x
  2. Step 2: Convert to fraction form
    1,291,911.89/1,938,302.51 = 572,153.79/x
  3. Step 3: Cross multiply
    1,291,911.89x = 1,938,302.51 × 572,153.79
  4. Step 4: Simplify right side
    1,291,911.89x = 1,109,007,127,263.01
  5. Step 5: Solve for x
    x = 1,109,007,127,263.01/1,291,911.89
  6. Step 6: Final answer
    x = 858,423.19

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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.