Home / 1,128,549.11-1,557,397.53-645,124.64

Finding the Fourth Proportional to 1,128,549.11, 1,557,397.53 and 645,124.64

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Solution

The fourth proportional to 1,128,549.11, 1,557,397.53 and 645,124.64 is: 890,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,549.11 : 1,557,397.53 = 645,124.64 : x
  2. Step 2: Convert to fraction form
    1,128,549.11/1,557,397.53 = 645,124.64/x
  3. Step 3: Cross multiply
    1,128,549.11x = 1,557,397.53 × 645,124.64
  4. Step 4: Simplify right side
    1,128,549.11x = 1,004,715,513,091.15
  5. Step 5: Solve for x
    x = 1,004,715,513,091.15/1,128,549.11
  6. Step 6: Final answer
    x = 890,271.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.