Home / 1,281,400.12-1,768,369.08-708,477.28

Finding the Fourth Proportional to 1,281,400.12, 1,768,369.08 and 708,477.28

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Solution

The fourth proportional to 1,281,400.12, 1,768,369.08 and 708,477.28 is: 977,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,400.12 : 1,768,369.08 = 708,477.28 : x
  2. Step 2: Convert to fraction form
    1,281,400.12/1,768,369.08 = 708,477.28/x
  3. Step 3: Cross multiply
    1,281,400.12x = 1,768,369.08 × 708,477.28
  4. Step 4: Simplify right side
    1,281,400.12x = 1,252,849,315,834.50
  5. Step 5: Solve for x
    x = 1,252,849,315,834.50/1,281,400.12
  6. Step 6: Final answer
    x = 977,719.06

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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.