Home / 870,864.89-1,201,727.20-488,817.86

Finding the Fourth Proportional to 870,864.89, 1,201,727.20 and 488,817.86

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Solution

The fourth proportional to 870,864.89, 1,201,727.20 and 488,817.86 is: 674,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,864.89 : 1,201,727.20 = 488,817.86 : x
  2. Step 2: Convert to fraction form
    870,864.89/1,201,727.20 = 488,817.86/x
  3. Step 3: Cross multiply
    870,864.89x = 1,201,727.20 × 488,817.86
  4. Step 4: Simplify right side
    870,864.89x = 587,425,716,400.12
  5. Step 5: Solve for x
    x = 587,425,716,400.12/870,864.89
  6. Step 6: Final answer
    x = 674,531.40

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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.