Home / 905,584.78-1,249,656.15-542,827.09

Finding the Fourth Proportional to 905,584.78, 1,249,656.15 and 542,827.09

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Solution

The fourth proportional to 905,584.78, 1,249,656.15 and 542,827.09 is: 749,070.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,584.78 : 1,249,656.15 = 542,827.09 : x
  2. Step 2: Convert to fraction form
    905,584.78/1,249,656.15 = 542,827.09/x
  3. Step 3: Cross multiply
    905,584.78x = 1,249,656.15 × 542,827.09
  4. Step 4: Simplify right side
    905,584.78x = 678,347,211,405.10
  5. Step 5: Solve for x
    x = 678,347,211,405.10/905,584.78
  6. Step 6: Final answer
    x = 749,070.91

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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.