Home / 700,278-966,426.84-398,471.28

Finding the Fourth Proportional to 700,278, 966,426.84 and 398,471.28

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Solution

The fourth proportional to 700,278, 966,426.84 and 398,471.28 is: 549,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,278 : 966,426.84 = 398,471.28 : x
  2. Step 2: Convert to fraction form
    700,278/966,426.84 = 398,471.28/x
  3. Step 3: Cross multiply
    700,278x = 966,426.84 × 398,471.28
  4. Step 4: Simplify right side
    700,278x = 385,093,339,961.16
  5. Step 5: Solve for x
    x = 385,093,339,961.16/700,278
  6. Step 6: Final answer
    x = 549,914.95

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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.