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Finding the Fourth Proportional to 355,698.40, 498,807.20 and 355,698.40

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Solution

The fourth proportional to 355,698.40, 498,807.20 and 355,698.40 is: 498,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,698.40 : 498,807.20 = 355,698.40 : x
  2. Step 2: Convert to fraction form
    355,698.40/498,807.20 = 355,698.40/x
  3. Step 3: Cross multiply
    355,698.40x = 498,807.20 × 355,698.40
  4. Step 4: Simplify right side
    355,698.40x = 177,424,922,948.48
  5. Step 5: Solve for x
    x = 177,424,922,948.48/355,698.40
  6. Step 6: Final answer
    x = 498,807.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.