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Finding the Fourth Proportional to 1,432,607.04, 1,977,064.20 and 788,015.52

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Solution

The fourth proportional to 1,432,607.04, 1,977,064.20 and 788,015.52 is: 1,087,497.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,607.04 : 1,977,064.20 = 788,015.52 : x
  2. Step 2: Convert to fraction form
    1,432,607.04/1,977,064.20 = 788,015.52/x
  3. Step 3: Cross multiply
    1,432,607.04x = 1,977,064.20 × 788,015.52
  4. Step 4: Simplify right side
    1,432,607.04x = 1,557,957,273,636.38
  5. Step 5: Solve for x
    x = 1,557,957,273,636.38/1,432,607.04
  6. Step 6: Final answer
    x = 1,087,497.99

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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.