Home / 674,008,840.80-1,011,013,261.20-285,765,602.40

Finding the Fourth Proportional to 674,008,840.80, 1,011,013,261.20 and 285,765,602.40

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Solution

The fourth proportional to 674,008,840.80, 1,011,013,261.20 and 285,765,602.40 is: 428,648,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,008,840.80 : 1,011,013,261.20 = 285,765,602.40 : x
  2. Step 2: Convert to fraction form
    674,008,840.80/1,011,013,261.20 = 285,765,602.40/x
  3. Step 3: Cross multiply
    674,008,840.80x = 1,011,013,261.20 × 285,765,602.40
  4. Step 4: Simplify right side
    674,008,840.80x = 288,912,813,621,206,528
  5. Step 5: Solve for x
    x = 288,912,813,621,206,528/674,008,840.80
  6. Step 6: Final answer
    x = 428,648,403.60

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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.