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Finding the Fourth Proportional to 873,407.64, 1,309,332.30 and 340,804.80

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Solution

The fourth proportional to 873,407.64, 1,309,332.30 and 340,804.80 is: 510,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,407.64 : 1,309,332.30 = 340,804.80 : x
  2. Step 2: Convert to fraction form
    873,407.64/1,309,332.30 = 340,804.80/x
  3. Step 3: Cross multiply
    873,407.64x = 1,309,332.30 × 340,804.80
  4. Step 4: Simplify right side
    873,407.64x = 446,226,731,357.02
  5. Step 5: Solve for x
    x = 446,226,731,357.02/873,407.64
  6. Step 6: Final answer
    x = 510,903.17

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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.