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Finding the Fourth Proportional to 673,643.68, 929,220.24 and 401,530.24

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Solution

The fourth proportional to 673,643.68, 929,220.24 and 401,530.24 is: 553,868.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,643.68 : 929,220.24 = 401,530.24 : x
  2. Step 2: Convert to fraction form
    673,643.68/929,220.24 = 401,530.24/x
  3. Step 3: Cross multiply
    673,643.68x = 929,220.24 × 401,530.24
  4. Step 4: Simplify right side
    673,643.68x = 373,110,025,980.06
  5. Step 5: Solve for x
    x = 373,110,025,980.06/673,643.68
  6. Step 6: Final answer
    x = 553,868.52

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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.