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Finding the Fourth Proportional to 880,419.04, 1,214,978.20 and 478,011.04

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Solution

The fourth proportional to 880,419.04, 1,214,978.20 and 478,011.04 is: 659,655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,419.04 : 1,214,978.20 = 478,011.04 : x
  2. Step 2: Convert to fraction form
    880,419.04/1,214,978.20 = 478,011.04/x
  3. Step 3: Cross multiply
    880,419.04x = 1,214,978.20 × 478,011.04
  4. Step 4: Simplify right side
    880,419.04x = 580,772,992,959.33
  5. Step 5: Solve for x
    x = 580,772,992,959.33/880,419.04
  6. Step 6: Final answer
    x = 659,655.19

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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.