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Finding the Fourth Proportional to 1,429,457.04, 1,972,678.08 and 784,943.28

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Solution

The fourth proportional to 1,429,457.04, 1,972,678.08 and 784,943.28 is: 1,083,236.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,457.04 : 1,972,678.08 = 784,943.28 : x
  2. Step 2: Convert to fraction form
    1,429,457.04/1,972,678.08 = 784,943.28/x
  3. Step 3: Cross multiply
    1,429,457.04x = 1,972,678.08 × 784,943.28
  4. Step 4: Simplify right side
    1,429,457.04x = 1,548,440,402,499.30
  5. Step 5: Solve for x
    x = 1,548,440,402,499.30/1,429,457.04
  6. Step 6: Final answer
    x = 1,083,236.75

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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.