Home / 472,658,738.40-709,718,014.80-257,667,890.40

Finding the Fourth Proportional to 472,658,738.40, 709,718,014.80 and 257,667,890.40

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Solution

The fourth proportional to 472,658,738.40, 709,718,014.80 and 257,667,890.40 is: 386,899,741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,658,738.40 : 709,718,014.80 = 257,667,890.40 : x
  2. Step 2: Convert to fraction form
    472,658,738.40/709,718,014.80 = 257,667,890.40/x
  3. Step 3: Cross multiply
    472,658,738.40x = 709,718,014.80 × 257,667,890.40
  4. Step 4: Simplify right side
    472,658,738.40x = 182,871,543,652,391,968
  5. Step 5: Solve for x
    x = 182,871,543,652,391,968/472,658,738.40
  6. Step 6: Final answer
    x = 386,899,741.39

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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.