Home / 393,142,783.20-589,714,174.80-134,319,206.40

Finding the Fourth Proportional to 393,142,783.20, 589,714,174.80 and 134,319,206.40

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Solution

The fourth proportional to 393,142,783.20, 589,714,174.80 and 134,319,206.40 is: 201,478,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,142,783.20 : 589,714,174.80 = 134,319,206.40 : x
  2. Step 2: Convert to fraction form
    393,142,783.20/589,714,174.80 = 134,319,206.40/x
  3. Step 3: Cross multiply
    393,142,783.20x = 589,714,174.80 × 134,319,206.40
  4. Step 4: Simplify right side
    393,142,783.20x = 79,209,939,961,966,880
  5. Step 5: Solve for x
    x = 79,209,939,961,966,880/393,142,783.20
  6. Step 6: Final answer
    x = 201,478,809.60

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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.