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Finding the Fourth Proportional to 1,402,064.94, 1,934,986.19 and 829,289.64

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Solution

The fourth proportional to 1,402,064.94, 1,934,986.19 and 829,289.64 is: 1,144,500.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402,064.94 : 1,934,986.19 = 829,289.64 : x
  2. Step 2: Convert to fraction form
    1,402,064.94/1,934,986.19 = 829,289.64/x
  3. Step 3: Cross multiply
    1,402,064.94x = 1,934,986.19 × 829,289.64
  4. Step 4: Simplify right side
    1,402,064.94x = 1,604,663,996,763.62
  5. Step 5: Solve for x
    x = 1,604,663,996,763.62/1,402,064.94
  6. Step 6: Final answer
    x = 1,144,500.48

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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.