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Finding the Fourth Proportional to 478,527.36, 660,414.29 and 357,458.45

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Solution

The fourth proportional to 478,527.36, 660,414.29 and 357,458.45 is: 493,327.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,527.36 : 660,414.29 = 357,458.45 : x
  2. Step 2: Convert to fraction form
    478,527.36/660,414.29 = 357,458.45/x
  3. Step 3: Cross multiply
    478,527.36x = 660,414.29 × 357,458.45
  4. Step 4: Simplify right side
    478,527.36x = 236,070,668,461.25
  5. Step 5: Solve for x
    x = 236,070,668,461.25/478,527.36
  6. Step 6: Final answer
    x = 493,327.42

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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.