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Finding the Fourth Proportional to 615,544.80, 922,879.80 and 278,746.80

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Solution

The fourth proportional to 615,544.80, 922,879.80 and 278,746.80 is: 417,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,544.80 : 922,879.80 = 278,746.80 : x
  2. Step 2: Convert to fraction form
    615,544.80/922,879.80 = 278,746.80/x
  3. Step 3: Cross multiply
    615,544.80x = 922,879.80 × 278,746.80
  4. Step 4: Simplify right side
    615,544.80x = 257,249,791,034.64
  5. Step 5: Solve for x
    x = 257,249,791,034.64/615,544.80
  6. Step 6: Final answer
    x = 417,922.13

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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.