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Finding the Fourth Proportional to 370,478.80, 520,070 and 370,478.80

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Solution

The fourth proportional to 370,478.80, 520,070 and 370,478.80 is: 520,070

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,478.80 : 520,070 = 370,478.80 : x
  2. Step 2: Convert to fraction form
    370,478.80/520,070 = 370,478.80/x
  3. Step 3: Cross multiply
    370,478.80x = 520,070 × 370,478.80
  4. Step 4: Simplify right side
    370,478.80x = 192,674,909,516
  5. Step 5: Solve for x
    x = 192,674,909,516/370,478.80
  6. Step 6: Final answer
    x = 520,070

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.