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Finding the Fourth Proportional to 707,586.80, 974,808.60 and 492,357.20

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Solution

The fourth proportional to 707,586.80, 974,808.60 and 492,357.20 is: 678,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,586.80 : 974,808.60 = 492,357.20 : x
  2. Step 2: Convert to fraction form
    707,586.80/974,808.60 = 492,357.20/x
  3. Step 3: Cross multiply
    707,586.80x = 974,808.60 × 492,357.20
  4. Step 4: Simplify right side
    707,586.80x = 479,954,032,831.92
  5. Step 5: Solve for x
    x = 479,954,032,831.92/707,586.80
  6. Step 6: Final answer
    x = 678,297.04

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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.