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Finding the Fourth Proportional to 472,649.70, 709,320.15 and 314,825.70

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Solution

The fourth proportional to 472,649.70, 709,320.15 and 314,825.70 is: 472,468.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,649.70 : 709,320.15 = 314,825.70 : x
  2. Step 2: Convert to fraction form
    472,649.70/709,320.15 = 314,825.70/x
  3. Step 3: Cross multiply
    472,649.70x = 709,320.15 × 314,825.70
  4. Step 4: Simplify right side
    472,649.70x = 223,312,212,747.86
  5. Step 5: Solve for x
    x = 223,312,212,747.86/472,649.70
  6. Step 6: Final answer
    x = 472,468.75

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1.5x scale

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.