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Finding the Fourth Proportional to 675,387.18, 931,999.50 and 369,404.01

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Solution

The fourth proportional to 675,387.18, 931,999.50 and 369,404.01 is: 509,758.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,387.18 : 931,999.50 = 369,404.01 : x
  2. Step 2: Convert to fraction form
    675,387.18/931,999.50 = 369,404.01/x
  3. Step 3: Cross multiply
    675,387.18x = 931,999.50 × 369,404.01
  4. Step 4: Simplify right side
    675,387.18x = 344,284,352,618.00
  5. Step 5: Solve for x
    x = 344,284,352,618.00/675,387.18
  6. Step 6: Final answer
    x = 509,758.50

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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.