Home / 905,293.68-1,249,413.89-542,916.89

Finding the Fourth Proportional to 905,293.68, 1,249,413.89 and 542,916.89

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Solution

The fourth proportional to 905,293.68, 1,249,413.89 and 542,916.89 is: 749,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,293.68 : 1,249,413.89 = 542,916.89 : x
  2. Step 2: Convert to fraction form
    905,293.68/1,249,413.89 = 542,916.89/x
  3. Step 3: Cross multiply
    905,293.68x = 1,249,413.89 × 542,916.89
  4. Step 4: Simplify right side
    905,293.68x = 678,327,903,481.60
  5. Step 5: Solve for x
    x = 678,327,903,481.60/905,293.68
  6. Step 6: Final answer
    x = 749,290.44

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1.5x scale

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.