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Finding the Fourth Proportional to 673,821.51, 928,655.81 and 558,492.81

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Solution

The fourth proportional to 673,821.51, 928,655.81 and 558,492.81 is: 769,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,821.51 : 928,655.81 = 558,492.81 : x
  2. Step 2: Convert to fraction form
    673,821.51/928,655.81 = 558,492.81/x
  3. Step 3: Cross multiply
    673,821.51x = 928,655.81 × 558,492.81
  4. Step 4: Simplify right side
    673,821.51x = 518,647,590,057.26
  5. Step 5: Solve for x
    x = 518,647,590,057.26/673,821.51
  6. Step 6: Final answer
    x = 769,710.65

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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.