Home / 1,108,140-1,529,167.39-642,957.91

Finding the Fourth Proportional to 1,108,140, 1,529,167.39 and 642,957.91

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Solution

The fourth proportional to 1,108,140, 1,529,167.39 and 642,957.91 is: 887,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,140 : 1,529,167.39 = 642,957.91 : x
  2. Step 2: Convert to fraction form
    1,108,140/1,529,167.39 = 642,957.91/x
  3. Step 3: Cross multiply
    1,108,140x = 1,529,167.39 × 642,957.91
  4. Step 4: Simplify right side
    1,108,140x = 983,190,269,114.56
  5. Step 5: Solve for x
    x = 983,190,269,114.56/1,108,140
  6. Step 6: Final answer
    x = 887,243.73

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Double scale
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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.