Home / 1,292,178.72-1,938,665.04-661,535.20

Finding the Fourth Proportional to 1,292,178.72, 1,938,665.04 and 661,535.20

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Solution

The fourth proportional to 1,292,178.72, 1,938,665.04 and 661,535.20 is: 992,506.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,178.72 : 1,938,665.04 = 661,535.20 : x
  2. Step 2: Convert to fraction form
    1,292,178.72/1,938,665.04 = 661,535.20/x
  3. Step 3: Cross multiply
    1,292,178.72x = 1,938,665.04 × 661,535.20
  4. Step 4: Simplify right side
    1,292,178.72x = 1,282,495,164,969.41
  5. Step 5: Solve for x
    x = 1,282,495,164,969.41/1,292,178.72
  6. Step 6: Final answer
    x = 992,506.02

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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.