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Finding the Fourth Proportional to 1,354,873.04, 1,869,878.76 and 782,066.96

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Solution

The fourth proportional to 1,354,873.04, 1,869,878.76 and 782,066.96 is: 1,079,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,873.04 : 1,869,878.76 = 782,066.96 : x
  2. Step 2: Convert to fraction form
    1,354,873.04/1,869,878.76 = 782,066.96/x
  3. Step 3: Cross multiply
    1,354,873.04x = 1,869,878.76 × 782,066.96
  4. Step 4: Simplify right side
    1,354,873.04x = 1,462,370,397,401.77
  5. Step 5: Solve for x
    x = 1,462,370,397,401.77/1,354,873.04
  6. Step 6: Final answer
    x = 1,079,341.28

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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.