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Finding the Fourth Proportional to 1,354,543.02, 1,869,305.04 and 765,795.60

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Solution

The fourth proportional to 1,354,543.02, 1,869,305.04 and 765,795.60 is: 1,056,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,543.02 : 1,869,305.04 = 765,795.60 : x
  2. Step 2: Convert to fraction form
    1,354,543.02/1,869,305.04 = 765,795.60/x
  3. Step 3: Cross multiply
    1,354,543.02x = 1,869,305.04 × 765,795.60
  4. Step 4: Simplify right side
    1,354,543.02x = 1,431,505,574,689.82
  5. Step 5: Solve for x
    x = 1,431,505,574,689.82/1,354,543.02
  6. Step 6: Final answer
    x = 1,056,818.10

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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.