Home / 474,869,145.60-712,303,718.40-428,007,859.20

Finding the Fourth Proportional to 474,869,145.60, 712,303,718.40 and 428,007,859.20

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Solution

The fourth proportional to 474,869,145.60, 712,303,718.40 and 428,007,859.20 is: 642,011,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,869,145.60 : 712,303,718.40 = 428,007,859.20 : x
  2. Step 2: Convert to fraction form
    474,869,145.60/712,303,718.40 = 428,007,859.20/x
  3. Step 3: Cross multiply
    474,869,145.60x = 712,303,718.40 × 428,007,859.20
  4. Step 4: Simplify right side
    474,869,145.60x = 304,871,589,612,583,616
  5. Step 5: Solve for x
    x = 304,871,589,612,583,616/474,869,145.60
  6. Step 6: Final answer
    x = 642,011,788.80

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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.