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Finding the Fourth Proportional to 415,904.80, 620,848.64 and 365,459.60

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Solution

The fourth proportional to 415,904.80, 620,848.64 and 365,459.60 is: 545,545.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,904.80 : 620,848.64 = 365,459.60 : x
  2. Step 2: Convert to fraction form
    415,904.80/620,848.64 = 365,459.60/x
  3. Step 3: Cross multiply
    415,904.80x = 620,848.64 × 365,459.60
  4. Step 4: Simplify right side
    415,904.80x = 226,895,095,634.94
  5. Step 5: Solve for x
    x = 226,895,095,634.94/415,904.80
  6. Step 6: Final answer
    x = 545,545.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.