Home / 1,285,018.02-1,927,452.51-386,440.20

Finding the Fourth Proportional to 1,285,018.02, 1,927,452.51 and 386,440.20

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Solution

The fourth proportional to 1,285,018.02, 1,927,452.51 and 386,440.20 is: 579,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,018.02 : 1,927,452.51 = 386,440.20 : x
  2. Step 2: Convert to fraction form
    1,285,018.02/1,927,452.51 = 386,440.20/x
  3. Step 3: Cross multiply
    1,285,018.02x = 1,927,452.51 × 386,440.20
  4. Step 4: Simplify right side
    1,285,018.02x = 744,845,133,454.90
  5. Step 5: Solve for x
    x = 744,845,133,454.90/1,285,018.02
  6. Step 6: Final answer
    x = 579,637.89

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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.