Home / 878,566.40-1,212,496.80-496,661.12

Finding the Fourth Proportional to 878,566.40, 1,212,496.80 and 496,661.12

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Solution

The fourth proportional to 878,566.40, 1,212,496.80 and 496,661.12 is: 685,434.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,566.40 : 1,212,496.80 = 496,661.12 : x
  2. Step 2: Convert to fraction form
    878,566.40/1,212,496.80 = 496,661.12/x
  3. Step 3: Cross multiply
    878,566.40x = 1,212,496.80 × 496,661.12
  4. Step 4: Simplify right side
    878,566.40x = 602,200,018,684.42
  5. Step 5: Solve for x
    x = 602,200,018,684.42/878,566.40
  6. Step 6: Final answer
    x = 685,434.84

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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.