Home / 858,582.40-1,286,836.80-437,641.60

Finding the Fourth Proportional to 858,582.40, 1,286,836.80 and 437,641.60

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Solution

The fourth proportional to 858,582.40, 1,286,836.80 and 437,641.60 is: 655,933.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,582.40 : 1,286,836.80 = 437,641.60 : x
  2. Step 2: Convert to fraction form
    858,582.40/1,286,836.80 = 437,641.60/x
  3. Step 3: Cross multiply
    858,582.40x = 1,286,836.80 × 437,641.60
  4. Step 4: Simplify right side
    858,582.40x = 563,173,316,090.88
  5. Step 5: Solve for x
    x = 563,173,316,090.88/858,582.40
  6. Step 6: Final answer
    x = 655,933.92

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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.