Home / 398,617,459.80-597,926,189.70-358,440,520.20

Finding the Fourth Proportional to 398,617,459.80, 597,926,189.70 and 358,440,520.20

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Solution

The fourth proportional to 398,617,459.80, 597,926,189.70 and 358,440,520.20 is: 537,660,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,617,459.80 : 597,926,189.70 = 358,440,520.20 : x
  2. Step 2: Convert to fraction form
    398,617,459.80/597,926,189.70 = 358,440,520.20/x
  3. Step 3: Cross multiply
    398,617,459.80x = 597,926,189.70 × 358,440,520.20
  4. Step 4: Simplify right side
    398,617,459.80x = 214,320,974,477,271,904
  5. Step 5: Solve for x
    x = 214,320,974,477,271,904/398,617,459.80
  6. Step 6: Final answer
    x = 537,660,780.30

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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.