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Finding the Fourth Proportional to 692,989.93, 956,316.02 and 387,070.66

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Solution

The fourth proportional to 692,989.93, 956,316.02 and 387,070.66 is: 534,151.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,989.93 : 956,316.02 = 387,070.66 : x
  2. Step 2: Convert to fraction form
    692,989.93/956,316.02 = 387,070.66/x
  3. Step 3: Cross multiply
    692,989.93x = 956,316.02 × 387,070.66
  4. Step 4: Simplify right side
    692,989.93x = 370,161,868,703.83
  5. Step 5: Solve for x
    x = 370,161,868,703.83/692,989.93
  6. Step 6: Final answer
    x = 534,151.87

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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.