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Finding the Fourth Proportional to 508,934.40, 763,401.60 and 470,443.20

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Solution

The fourth proportional to 508,934.40, 763,401.60 and 470,443.20 is: 705,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,934.40 : 763,401.60 = 470,443.20 : x
  2. Step 2: Convert to fraction form
    508,934.40/763,401.60 = 470,443.20/x
  3. Step 3: Cross multiply
    508,934.40x = 763,401.60 × 470,443.20
  4. Step 4: Simplify right side
    508,934.40x = 359,137,091,589.12
  5. Step 5: Solve for x
    x = 359,137,091,589.12/508,934.40
  6. Step 6: Final answer
    x = 705,664.80

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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.