Home / 1,128,612.02-1,557,483.75-645,187.82

Finding the Fourth Proportional to 1,128,612.02, 1,557,483.75 and 645,187.82

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Solution

The fourth proportional to 1,128,612.02, 1,557,483.75 and 645,187.82 is: 890,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,612.02 : 1,557,483.75 = 645,187.82 : x
  2. Step 2: Convert to fraction form
    1,128,612.02/1,557,483.75 = 645,187.82/x
  3. Step 3: Cross multiply
    1,128,612.02x = 1,557,483.75 × 645,187.82
  4. Step 4: Simplify right side
    1,128,612.02x = 1,004,869,545,347.93
  5. Step 5: Solve for x
    x = 1,004,869,545,347.93/1,128,612.02
  6. Step 6: Final answer
    x = 890,358.71

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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.