Home / 905,642.10-1,249,759.74-518,444.46

Finding the Fourth Proportional to 905,642.10, 1,249,759.74 and 518,444.46

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Solution

The fourth proportional to 905,642.10, 1,249,759.74 and 518,444.46 is: 715,438.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,642.10 : 1,249,759.74 = 518,444.46 : x
  2. Step 2: Convert to fraction form
    905,642.10/1,249,759.74 = 518,444.46/x
  3. Step 3: Cross multiply
    905,642.10x = 1,249,759.74 × 518,444.46
  4. Step 4: Simplify right side
    905,642.10x = 647,931,013,534.04
  5. Step 5: Solve for x
    x = 647,931,013,534.04/905,642.10
  6. Step 6: Final answer
    x = 715,438.27

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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.