Home / 786,965.27-1,178,004.35-426,240.21

Finding the Fourth Proportional to 786,965.27, 1,178,004.35 and 426,240.21

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Solution

The fourth proportional to 786,965.27, 1,178,004.35 and 426,240.21 is: 638,036.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,965.27 : 1,178,004.35 = 426,240.21 : x
  2. Step 2: Convert to fraction form
    786,965.27/1,178,004.35 = 426,240.21/x
  3. Step 3: Cross multiply
    786,965.27x = 1,178,004.35 × 426,240.21
  4. Step 4: Simplify right side
    786,965.27x = 502,112,819,393.71
  5. Step 5: Solve for x
    x = 502,112,819,393.71/786,965.27
  6. Step 6: Final answer
    x = 638,036.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.