Home / 878,400.90-1,316,726.55-404,259.30

Finding the Fourth Proportional to 878,400.90, 1,316,726.55 and 404,259.30

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Solution

The fourth proportional to 878,400.90, 1,316,726.55 and 404,259.30 is: 605,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,400.90 : 1,316,726.55 = 404,259.30 : x
  2. Step 2: Convert to fraction form
    878,400.90/1,316,726.55 = 404,259.30/x
  3. Step 3: Cross multiply
    878,400.90x = 1,316,726.55 × 404,259.30
  4. Step 4: Simplify right side
    878,400.90x = 532,298,953,394.42
  5. Step 5: Solve for x
    x = 532,298,953,394.42/878,400.90
  6. Step 6: Final answer
    x = 605,986.35

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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.