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Finding the Fourth Proportional to 478,967.54, 661,019.58 and 275,045.18

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Solution

The fourth proportional to 478,967.54, 661,019.58 and 275,045.18 is: 379,587.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,967.54 : 661,019.58 = 275,045.18 : x
  2. Step 2: Convert to fraction form
    478,967.54/661,019.58 = 275,045.18/x
  3. Step 3: Cross multiply
    478,967.54x = 661,019.58 × 275,045.18
  4. Step 4: Simplify right side
    478,967.54x = 181,810,249,364.62
  5. Step 5: Solve for x
    x = 181,810,249,364.62/478,967.54
  6. Step 6: Final answer
    x = 379,587.83

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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.