Home / 921,942.28-1,272,187.38-514,005.76

Finding the Fourth Proportional to 921,942.28, 1,272,187.38 and 514,005.76

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Solution

The fourth proportional to 921,942.28, 1,272,187.38 and 514,005.76 is: 709,276.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,942.28 : 1,272,187.38 = 514,005.76 : x
  2. Step 2: Convert to fraction form
    921,942.28/1,272,187.38 = 514,005.76/x
  3. Step 3: Cross multiply
    921,942.28x = 1,272,187.38 × 514,005.76
  4. Step 4: Simplify right side
    921,942.28x = 653,911,641,119.31
  5. Step 5: Solve for x
    x = 653,911,641,119.31/921,942.28
  6. Step 6: Final answer
    x = 709,276.12

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1.5x scale

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.