Home / 714,212.06-985,612.02-391,942.40

Finding the Fourth Proportional to 714,212.06, 985,612.02 and 391,942.40

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Solution

The fourth proportional to 714,212.06, 985,612.02 and 391,942.40 is: 540,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,212.06 : 985,612.02 = 391,942.40 : x
  2. Step 2: Convert to fraction form
    714,212.06/985,612.02 = 391,942.40/x
  3. Step 3: Cross multiply
    714,212.06x = 985,612.02 × 391,942.40
  4. Step 4: Simplify right side
    714,212.06x = 386,303,140,587.65
  5. Step 5: Solve for x
    x = 386,303,140,587.65/714,212.06
  6. Step 6: Final answer
    x = 540,880.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.