Home / 388,276,243.20-582,414,364.80-353,130,278.40

Finding the Fourth Proportional to 388,276,243.20, 582,414,364.80 and 353,130,278.40

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Solution

The fourth proportional to 388,276,243.20, 582,414,364.80 and 353,130,278.40 is: 529,695,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,276,243.20 : 582,414,364.80 = 353,130,278.40 : x
  2. Step 2: Convert to fraction form
    388,276,243.20/582,414,364.80 = 353,130,278.40/x
  3. Step 3: Cross multiply
    388,276,243.20x = 582,414,364.80 × 353,130,278.40
  4. Step 4: Simplify right side
    388,276,243.20x = 205,668,146,785,983,136
  5. Step 5: Solve for x
    x = 205,668,146,785,983,136/388,276,243.20
  6. Step 6: Final answer
    x = 529,695,417.60

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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.