Home / 421,012,167.16-628,434,592.40-371,311,804.84

Finding the Fourth Proportional to 421,012,167.16, 628,434,592.40 and 371,311,804.84

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Solution

The fourth proportional to 421,012,167.16, 628,434,592.40 and 371,311,804.84 is: 554,248,073.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,012,167.16 : 628,434,592.40 = 371,311,804.84 : x
  2. Step 2: Convert to fraction form
    421,012,167.16/628,434,592.40 = 371,311,804.84/x
  3. Step 3: Cross multiply
    421,012,167.16x = 628,434,592.40 × 371,311,804.84
  4. Step 4: Simplify right side
    421,012,167.16x = 233,345,182,727,933,728
  5. Step 5: Solve for x
    x = 233,345,182,727,933,728/421,012,167.16
  6. Step 6: Final answer
    x = 554,248,073.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.