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Finding the Fourth Proportional to 615,214.20, 922,821.30 and 606,919.80

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Solution

The fourth proportional to 615,214.20, 922,821.30 and 606,919.80 is: 910,379.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,214.20 : 922,821.30 = 606,919.80 : x
  2. Step 2: Convert to fraction form
    615,214.20/922,821.30 = 606,919.80/x
  3. Step 3: Cross multiply
    615,214.20x = 922,821.30 × 606,919.80
  4. Step 4: Simplify right side
    615,214.20x = 560,078,518,831.74
  5. Step 5: Solve for x
    x = 560,078,518,831.74/615,214.20
  6. Step 6: Final answer
    x = 910,379.70

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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.