Home / 905,357.77-1,249,502.33-542,980.98

Finding the Fourth Proportional to 905,357.77, 1,249,502.33 and 542,980.98

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Solution

The fourth proportional to 905,357.77, 1,249,502.33 and 542,980.98 is: 749,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,357.77 : 1,249,502.33 = 542,980.98 : x
  2. Step 2: Convert to fraction form
    905,357.77/1,249,502.33 = 542,980.98/x
  3. Step 3: Cross multiply
    905,357.77x = 1,249,502.33 × 542,980.98
  4. Step 4: Simplify right side
    905,357.77x = 678,455,999,655.68
  5. Step 5: Solve for x
    x = 678,455,999,655.68/905,357.77
  6. Step 6: Final answer
    x = 749,378.89

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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.