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Finding the Fourth Proportional to 1,036,678.65, 1,555,017.98 and 977,629.65

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Solution

The fourth proportional to 1,036,678.65, 1,555,017.98 and 977,629.65 is: 1,466,444.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,678.65 : 1,555,017.98 = 977,629.65 : x
  2. Step 2: Convert to fraction form
    1,036,678.65/1,555,017.98 = 977,629.65/x
  3. Step 3: Cross multiply
    1,036,678.65x = 1,555,017.98 × 977,629.65
  4. Step 4: Simplify right side
    1,036,678.65x = 1,520,231,678,642.96
  5. Step 5: Solve for x
    x = 1,520,231,678,642.96/1,036,678.65
  6. Step 6: Final answer
    x = 1,466,444.48

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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.