Home / 1,338,809.60-2,005,492.80-831,814.40

Finding the Fourth Proportional to 1,338,809.60, 2,005,492.80 and 831,814.40

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Solution

The fourth proportional to 1,338,809.60, 2,005,492.80 and 831,814.40 is: 1,246,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,809.60 : 2,005,492.80 = 831,814.40 : x
  2. Step 2: Convert to fraction form
    1,338,809.60/2,005,492.80 = 831,814.40/x
  3. Step 3: Cross multiply
    1,338,809.60x = 2,005,492.80 × 831,814.40
  4. Step 4: Simplify right side
    1,338,809.60x = 1,668,197,790,136.32
  5. Step 5: Solve for x
    x = 1,668,197,790,136.32/1,338,809.60
  6. Step 6: Final answer
    x = 1,246,030.65

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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.