Home / 905,784.86-1,249,956.09-518,587.43

Finding the Fourth Proportional to 905,784.86, 1,249,956.09 and 518,587.43

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Solution

The fourth proportional to 905,784.86, 1,249,956.09 and 518,587.43 is: 715,635.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,784.86 : 1,249,956.09 = 518,587.43 : x
  2. Step 2: Convert to fraction form
    905,784.86/1,249,956.09 = 518,587.43/x
  3. Step 3: Cross multiply
    905,784.86x = 1,249,956.09 × 518,587.43
  4. Step 4: Simplify right side
    905,784.86x = 648,211,516,325.95
  5. Step 5: Solve for x
    x = 648,211,516,325.95/905,784.86
  6. Step 6: Final answer
    x = 715,635.19

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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.