Home / 905,646.36-1,249,518.78-542,937.72

Finding the Fourth Proportional to 905,646.36, 1,249,518.78 and 542,937.72

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Solution

The fourth proportional to 905,646.36, 1,249,518.78 and 542,937.72 is: 749,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,646.36 : 1,249,518.78 = 542,937.72 : x
  2. Step 2: Convert to fraction form
    905,646.36/1,249,518.78 = 542,937.72/x
  3. Step 3: Cross multiply
    905,646.36x = 1,249,518.78 × 542,937.72
  4. Step 4: Simplify right side
    905,646.36x = 678,410,877,510.38
  5. Step 5: Solve for x
    x = 678,410,877,510.38/905,646.36
  6. Step 6: Final answer
    x = 749,090.27

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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.