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Finding the Fourth Proportional to 510,066.40, 763,933.20 and 260,456.80

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Solution

The fourth proportional to 510,066.40, 763,933.20 and 260,456.80 is: 390,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,066.40 : 763,933.20 = 260,456.80 : x
  2. Step 2: Convert to fraction form
    510,066.40/763,933.20 = 260,456.80/x
  3. Step 3: Cross multiply
    510,066.40x = 763,933.20 × 260,456.80
  4. Step 4: Simplify right side
    510,066.40x = 198,971,596,685.76
  5. Step 5: Solve for x
    x = 198,971,596,685.76/510,066.40
  6. Step 6: Final answer
    x = 390,089.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.