Home / 786,431.16-1,085,259.67-442,271.48

Finding the Fourth Proportional to 786,431.16, 1,085,259.67 and 442,271.48

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Solution

The fourth proportional to 786,431.16, 1,085,259.67 and 442,271.48 is: 610,326.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,431.16 : 1,085,259.67 = 442,271.48 : x
  2. Step 2: Convert to fraction form
    786,431.16/1,085,259.67 = 442,271.48/x
  3. Step 3: Cross multiply
    786,431.16x = 1,085,259.67 × 442,271.48
  4. Step 4: Simplify right side
    786,431.16x = 479,979,393,903.24
  5. Step 5: Solve for x
    x = 479,979,393,903.24/786,431.16
  6. Step 6: Final answer
    x = 610,326.01

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Double scale
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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.