Home / 714,279.29-985,424.81-408,191.45

Finding the Fourth Proportional to 714,279.29, 985,424.81 and 408,191.45

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Solution

The fourth proportional to 714,279.29, 985,424.81 and 408,191.45 is: 563,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,279.29 : 985,424.81 = 408,191.45 : x
  2. Step 2: Convert to fraction form
    714,279.29/985,424.81 = 408,191.45/x
  3. Step 3: Cross multiply
    714,279.29x = 985,424.81 × 408,191.45
  4. Step 4: Simplify right side
    714,279.29x = 402,241,982,482.48
  5. Step 5: Solve for x
    x = 402,241,982,482.48/714,279.29
  6. Step 6: Final answer
    x = 563,143.84

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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.