Home / 749,153.80-1,123,730.70-434,420.20

Finding the Fourth Proportional to 749,153.80, 1,123,730.70 and 434,420.20

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Solution

The fourth proportional to 749,153.80, 1,123,730.70 and 434,420.20 is: 651,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,153.80 : 1,123,730.70 = 434,420.20 : x
  2. Step 2: Convert to fraction form
    749,153.80/1,123,730.70 = 434,420.20/x
  3. Step 3: Cross multiply
    749,153.80x = 1,123,730.70 × 434,420.20
  4. Step 4: Simplify right side
    749,153.80x = 488,171,315,440.14
  5. Step 5: Solve for x
    x = 488,171,315,440.14/749,153.80
  6. Step 6: Final answer
    x = 651,630.30

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Half scale
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Double scale
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Similar ratio
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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.