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Finding the Fourth Proportional to 545,870.16, 818,649.72 and 345,888.72

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Solution

The fourth proportional to 545,870.16, 818,649.72 and 345,888.72 is: 518,734.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,870.16 : 818,649.72 = 345,888.72 : x
  2. Step 2: Convert to fraction form
    545,870.16/818,649.72 = 345,888.72/x
  3. Step 3: Cross multiply
    545,870.16x = 818,649.72 × 345,888.72
  4. Step 4: Simplify right side
    545,870.16x = 283,161,703,779.16
  5. Step 5: Solve for x
    x = 283,161,703,779.16/545,870.16
  6. Step 6: Final answer
    x = 518,734.54

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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.