Home / 402,408,105.20-603,612,157.80-345,012,477.20

Finding the Fourth Proportional to 402,408,105.20, 603,612,157.80 and 345,012,477.20

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Solution

The fourth proportional to 402,408,105.20, 603,612,157.80 and 345,012,477.20 is: 517,518,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,105.20 : 603,612,157.80 = 345,012,477.20 : x
  2. Step 2: Convert to fraction form
    402,408,105.20/603,612,157.80 = 345,012,477.20/x
  3. Step 3: Cross multiply
    402,408,105.20x = 603,612,157.80 × 345,012,477.20
  4. Step 4: Simplify right side
    402,408,105.20x = 208,253,725,830,615,264
  5. Step 5: Solve for x
    x = 208,253,725,830,615,264/402,408,105.20
  6. Step 6: Final answer
    x = 517,518,715.80

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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.