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Finding the Fourth Proportional to 615,458.20, 922,496.10 and 260,411.80

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Solution

The fourth proportional to 615,458.20, 922,496.10 and 260,411.80 is: 390,325.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,458.20 : 922,496.10 = 260,411.80 : x
  2. Step 2: Convert to fraction form
    615,458.20/922,496.10 = 260,411.80/x
  3. Step 3: Cross multiply
    615,458.20x = 922,496.10 × 260,411.80
  4. Step 4: Simplify right side
    615,458.20x = 240,228,869,893.98
  5. Step 5: Solve for x
    x = 240,228,869,893.98/615,458.20
  6. Step 6: Final answer
    x = 390,325.24

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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.