Home / 878,416.20-1,317,818.70-404,987.40

Finding the Fourth Proportional to 878,416.20, 1,317,818.70 and 404,987.40

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Solution

The fourth proportional to 878,416.20, 1,317,818.70 and 404,987.40 is: 607,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,416.20 : 1,317,818.70 = 404,987.40 : x
  2. Step 2: Convert to fraction form
    878,416.20/1,317,818.70 = 404,987.40/x
  3. Step 3: Cross multiply
    878,416.20x = 1,317,818.70 × 404,987.40
  4. Step 4: Simplify right side
    878,416.20x = 533,699,968,984.38
  5. Step 5: Solve for x
    x = 533,699,968,984.38/878,416.20
  6. Step 6: Final answer
    x = 607,570.73

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1.5x scale

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.