Home / 1,189,407.92-1,641,384.51-645,543.70

Finding the Fourth Proportional to 1,189,407.92, 1,641,384.51 and 645,543.70

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Solution

The fourth proportional to 1,189,407.92, 1,641,384.51 and 645,543.70 is: 890,851.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,407.92 : 1,641,384.51 = 645,543.70 : x
  2. Step 2: Convert to fraction form
    1,189,407.92/1,641,384.51 = 645,543.70/x
  3. Step 3: Cross multiply
    1,189,407.92x = 1,641,384.51 × 645,543.70
  4. Step 4: Simplify right side
    1,189,407.92x = 1,059,585,427,800.23
  5. Step 5: Solve for x
    x = 1,059,585,427,800.23/1,189,407.92
  6. Step 6: Final answer
    x = 890,851.16

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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.