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Finding the Fourth Proportional to 578,859.30, 798,386.58 and 507,114.72

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Solution

The fourth proportional to 578,859.30, 798,386.58 and 507,114.72 is: 699,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,859.30 : 798,386.58 = 507,114.72 : x
  2. Step 2: Convert to fraction form
    578,859.30/798,386.58 = 507,114.72/x
  3. Step 3: Cross multiply
    578,859.30x = 798,386.58 × 507,114.72
  4. Step 4: Simplify right side
    578,859.30x = 404,873,586,968.46
  5. Step 5: Solve for x
    x = 404,873,586,968.46/578,859.30
  6. Step 6: Final answer
    x = 699,433.50

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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.