Home / 623,913.12-861,699.60-422,359.20

Finding the Fourth Proportional to 623,913.12, 861,699.60 and 422,359.20

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Solution

The fourth proportional to 623,913.12, 861,699.60 and 422,359.20 is: 583,329.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,913.12 : 861,699.60 = 422,359.20 : x
  2. Step 2: Convert to fraction form
    623,913.12/861,699.60 = 422,359.20/x
  3. Step 3: Cross multiply
    623,913.12x = 861,699.60 × 422,359.20
  4. Step 4: Simplify right side
    623,913.12x = 363,946,753,696.32
  5. Step 5: Solve for x
    x = 363,946,753,696.32/623,913.12
  6. Step 6: Final answer
    x = 583,329.22

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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.