Home / 1,125,606.40-1,553,484.80-642,060.80

Finding the Fourth Proportional to 1,125,606.40, 1,553,484.80 and 642,060.80

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Solution

The fourth proportional to 1,125,606.40, 1,553,484.80 and 642,060.80 is: 886,128.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,606.40 : 1,553,484.80 = 642,060.80 : x
  2. Step 2: Convert to fraction form
    1,125,606.40/1,553,484.80 = 642,060.80/x
  3. Step 3: Cross multiply
    1,125,606.40x = 1,553,484.80 × 642,060.80
  4. Step 4: Simplify right side
    1,125,606.40x = 997,431,693,475.84
  5. Step 5: Solve for x
    x = 997,431,693,475.84/1,125,606.40
  6. Step 6: Final answer
    x = 886,128.31

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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.