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Finding the Fourth Proportional to 615,095.90, 922,643.85 and 490,679.90

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Solution

The fourth proportional to 615,095.90, 922,643.85 and 490,679.90 is: 736,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,095.90 : 922,643.85 = 490,679.90 : x
  2. Step 2: Convert to fraction form
    615,095.90/922,643.85 = 490,679.90/x
  3. Step 3: Cross multiply
    615,095.90x = 922,643.85 × 490,679.90
  4. Step 4: Simplify right side
    615,095.90x = 452,722,792,053.62
  5. Step 5: Solve for x
    x = 452,722,792,053.62/615,095.90
  6. Step 6: Final answer
    x = 736,019.85

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Similar ratio
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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.