Home / 421,992,836.20-632,989,254.30-384,369,437.80

Finding the Fourth Proportional to 421,992,836.20, 632,989,254.30 and 384,369,437.80

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Solution

The fourth proportional to 421,992,836.20, 632,989,254.30 and 384,369,437.80 is: 576,554,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,992,836.20 : 632,989,254.30 = 384,369,437.80 : x
  2. Step 2: Convert to fraction form
    421,992,836.20/632,989,254.30 = 384,369,437.80/x
  3. Step 3: Cross multiply
    421,992,836.20x = 632,989,254.30 × 384,369,437.80
  4. Step 4: Simplify right side
    421,992,836.20x = 243,301,723,808,732,224
  5. Step 5: Solve for x
    x = 243,301,723,808,732,224/421,992,836.20
  6. Step 6: Final answer
    x = 576,554,156.70

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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.