Home / 870,888.09-1,201,784.66-483,728.61

Finding the Fourth Proportional to 870,888.09, 1,201,784.66 and 483,728.61

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Solution

The fourth proportional to 870,888.09, 1,201,784.66 and 483,728.61 is: 667,522.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,888.09 : 1,201,784.66 = 483,728.61 : x
  2. Step 2: Convert to fraction form
    870,888.09/1,201,784.66 = 483,728.61/x
  3. Step 3: Cross multiply
    870,888.09x = 1,201,784.66 × 483,728.61
  4. Step 4: Simplify right side
    870,888.09x = 581,337,623,101.12
  5. Step 5: Solve for x
    x = 581,337,623,101.12/870,888.09
  6. Step 6: Final answer
    x = 667,522.76

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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.