Home / 399,178,889.40-598,768,334.10-369,319,049.40

Finding the Fourth Proportional to 399,178,889.40, 598,768,334.10 and 369,319,049.40

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Solution

The fourth proportional to 399,178,889.40, 598,768,334.10 and 369,319,049.40 is: 553,978,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,889.40 : 598,768,334.10 = 369,319,049.40 : x
  2. Step 2: Convert to fraction form
    399,178,889.40/598,768,334.10 = 369,319,049.40/x
  3. Step 3: Cross multiply
    399,178,889.40x = 598,768,334.10 × 369,319,049.40
  4. Step 4: Simplify right side
    399,178,889.40x = 221,136,551,960,633,600
  5. Step 5: Solve for x
    x = 221,136,551,960,633,600/399,178,889.40
  6. Step 6: Final answer
    x = 553,978,574.10

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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.