Home / 1,388,981.64-2,081,948.39-715,098.90

Finding the Fourth Proportional to 1,388,981.64, 2,081,948.39 and 715,098.90

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Solution

The fourth proportional to 1,388,981.64, 2,081,948.39 and 715,098.90 is: 1,071,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,981.64 : 2,081,948.39 = 715,098.90 : x
  2. Step 2: Convert to fraction form
    1,388,981.64/2,081,948.39 = 715,098.90/x
  3. Step 3: Cross multiply
    1,388,981.64x = 2,081,948.39 × 715,098.90
  4. Step 4: Simplify right side
    1,388,981.64x = 1,488,798,999,970.28
  5. Step 5: Solve for x
    x = 1,488,798,999,970.28/1,388,981.64
  6. Step 6: Final answer
    x = 1,071,863.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.