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Finding the Fourth Proportional to 692,999.48, 956,329.12 and 387,080.30

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Solution

The fourth proportional to 692,999.48, 956,329.12 and 387,080.30 is: 534,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,999.48 : 956,329.12 = 387,080.30 : x
  2. Step 2: Convert to fraction form
    692,999.48/956,329.12 = 387,080.30/x
  3. Step 3: Cross multiply
    692,999.48x = 956,329.12 × 387,080.30
  4. Step 4: Simplify right side
    692,999.48x = 370,176,156,918.99
  5. Step 5: Solve for x
    x = 370,176,156,918.99/692,999.48
  6. Step 6: Final answer
    x = 534,165.13

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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.