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Finding the Fourth Proportional to 615,087.90, 922,631.85 and 490,671.90

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Solution

The fourth proportional to 615,087.90, 922,631.85 and 490,671.90 is: 736,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,087.90 : 922,631.85 = 490,671.90 : x
  2. Step 2: Convert to fraction form
    615,087.90/922,631.85 = 490,671.90/x
  3. Step 3: Cross multiply
    615,087.90x = 922,631.85 × 490,671.90
  4. Step 4: Simplify right side
    615,087.90x = 452,709,522,840.02
  5. Step 5: Solve for x
    x = 452,709,522,840.02/615,087.90
  6. Step 6: Final answer
    x = 736,007.85

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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.