Home / 1,345,459.59-2,015,905.59-811,859.40

Finding the Fourth Proportional to 1,345,459.59, 2,015,905.59 and 811,859.40

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Solution

The fourth proportional to 1,345,459.59, 2,015,905.59 and 811,859.40 is: 1,216,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,459.59 : 2,015,905.59 = 811,859.40 : x
  2. Step 2: Convert to fraction form
    1,345,459.59/2,015,905.59 = 811,859.40/x
  3. Step 3: Cross multiply
    1,345,459.59x = 2,015,905.59 × 811,859.40
  4. Step 4: Simplify right side
    1,345,459.59x = 1,636,631,902,754.05
  5. Step 5: Solve for x
    x = 1,636,631,902,754.05/1,345,459.59
  6. Step 6: Final answer
    x = 1,216,411.04

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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.