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Finding the Fourth Proportional to 939,700, 1,297,862.40 and 618,844.24

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Solution

The fourth proportional to 939,700, 1,297,862.40 and 618,844.24 is: 854,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,700 : 1,297,862.40 = 618,844.24 : x
  2. Step 2: Convert to fraction form
    939,700/1,297,862.40 = 618,844.24/x
  3. Step 3: Cross multiply
    939,700x = 1,297,862.40 × 618,844.24
  4. Step 4: Simplify right side
    939,700x = 803,174,670,552.58
  5. Step 5: Solve for x
    x = 803,174,670,552.58/939,700
  6. Step 6: Final answer
    x = 854,713.92

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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.